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R. Brent Wisner

Attorney Profile

Top Rated Class Action & Mass Torts Attorney in Larkspur, CA

Baum, Hedlund, Aristei & Goldman, P.C.
80 E Sir Francis Drake Blvd., Suite 3J
Larkspur, CA 94939
Phone: 415-873-4775
Selected to Rising Stars: 2016 - 2021
Licensed in California Since: 2011
Practice Areas: Class Action/Mass Torts: Plaintiff (70%), Personal Injury - Products: Plaintiff (20%), Personal Injury - General: Plaintiff (10%)
Languages Spoken: English, French, Spanish
Attorney Profile

Attorney R. Brent Wisner is a senior shareholder and the vice president of Baum Hedlund Aristei & Goldman, a nationwide law firm based in Los Angeles, California. Brent runs our San Francisco Bay Area office, where he focuses his practice on holding negligent and sometimes malicious corporations accountable through pharmaceutical product liability, toxic torts and consumer fraud and class action litigation. One of the firm’s leading trial lawyers, Brent oversees the mass tort litigation department. He is actively involved in all litigation stages, from briefing to trial and through the appeal process when necessary.

He is passionate about vindicating the rights of those harmed by corporate wrongdoing. No matter how large the corporation or how much global influence it has, Attorney Wisner never backs down in the face of injustice. He has litigated cases against such companies as Bayer, Eli Lilly, Forest Labs, GlaxoSmithKline, Monsanto and Takeda.

A Key Force in the Monsanto Roundup Cancer Trials

Attorney Wisner’s work on the Monsanto Roundup litigation earned him national acclaim as the youngest United States attorney in history to ever win a multi-billion-dollar jury verdict. In 2019, Brent, his co-lead trial counsel, and their team won a historic $2.055 billion verdict against Bayer (formerly Monsanto) for a California couple that alleged repeated exposure to Roundup weed killer caused them to develop non-Hodgkin’s lymphoma.

A year prior, Brent, his co-lead trial counsel and their team won the first Roundup case to proceed to trial, a landmark $289 million jury verdict for a California man who developed non-Hodgkin’s lymphoma after years of spraying Roundup as a groundskeeper.

In 2020, Brent was an integral part of the team of lawyers that helped obtain the $10.9 billion in settlements with Bayer to resolve tens of thousands of Roundup cancer cases.

A Leading Plaintiff’s Attorney in Pharmaceutical Litigation

Attorney Wisner also served as co-lead counsel in the first multi-million-dollar jury verdict won against a brand name drug manufacturer, GlaxoSmithKline (GSK), over the health risks posed by the generic version of GSK’s antidepressant drug, Paxil (paroxetine).

When the firm learned of a widow whose husband died by suicide while taking the generic version of Paxil, Attorney Wisner and his colleagues at the firm took on GSK for inadequately warning doctors about how the drug could increase the risk of suicidal behavior in adults of all ages. In 2018 the National Law Journal honored Attorney Wisner and his firm as Elite Trial Lawyers for their work in the generic Paxil suicide case and Law360 awarded him Titan of the Plaintiffs Bar.

His work in pharmaceutical litigation does not stop at harmful antidepressant medications. Attorney Wisner is one of the nation’s leading Zantac (ranitidine) attorneys. He represents many thousands of people throughout the country who allege Zantac (ranitidine) contains a cancer-causing ingredient at levels exponentially higher than the U.S. Food and Drug Administration’s (FDA’s) legal limit.

The judge presiding over the Zantac multidistrict litigation (MDL) appointed Brent to the Practices and Procedures Team to establish protocols for handling the thousands of cases to come. Attorney Wisner is Co-Lead Plaintiffs’ Liaison Counsel for the Ranitidine Product Cases, also known as the Ranitidine (Zantac) Judicial Council Coordinated Proceedings (JCCP 5150), California Superior Court for the County of Alameda, California. He also serves as the American Association for Justice (AAJ) Zantac Litigation Group Co-Chair.

Awards & Accolades

Often chosen as one of a select group of remarkable trial lawyers with victories in high-stakes matters, Attorney Wisner is grateful for the many awards and accolades he has won in the early stage of his career. Not yet in his 40’s, Brent is viewed by many in the legal community as one of the country’s leading mass tort lawyers. The National Law Journal and VerdictSearch inducted him into the Verdicts Hall of Fame in 2020.

Some of his top awards include:

  • Clarence Darrow Award by MTMP – Mass Torts Made Perfect, 2021
  • The American Lawyer 2021 Inaugural List of West Trailblazers 2021
  • California Power House, Law360 Regional Powerhouse Series, 2021
  • Rising Star 2021, Law360
  • America’s 50 Most Influential Trial Lawyers 2019, Trial Lawyer Magazine and The National Law Journal
  • MVP Lawyer of the Year 2020, Product Liability, Law360
  • Product Liability Practice Group of the Year 2020, Law360
  • The Best Lawyers in America® 2021
  • The National Trial Lawyers: Top 40 under 40
  • Top 40 Under 40 Attorneys in California, 2019, Daily Journal
  • Civil Plaintiffs Trial Lawyer of the Year 2019, National Trial Lawyers and ALM
  • Top 100 Lawyers in California 2018, 2020, Daily Journal
  • Top Plaintiffs Lawyers in California, 2019, 2021, 2021, Daily Journal
  • Elite Trial Lawyers Mass Tort Trial Team of the Year 2019, The National Law Journal and Trial Lawyer Magazine
  • Lawdragon 500 Leading Plaintiff Consumer Lawyer
  • Southern California Super Lawyers® Rising Stars, 2016–2020
  • Winning Litigators 2019, The National Law Journal
  • Titan of the Plaintiffs Bar 2018, Law360
  • Avvo.com Superb Score 10 out of 10

Early Years

Attorney Wisner earned his bachelor’s degree in philosophy and political science from the University of California, Los Angeles, his master’s degree in public policy from Georgetown McCourt School of Public Policy, Washington, D.C., and his law degree from Georgetown University Law Center, Washington, D.C.

A proud UCLA Bruin, Brent served as captain of UCLA’s Mock Trial Team, which won back-to-back national championships under his leadership.

At Georgetown, Attorney Wisner was a participant in the Coro Fellowship, which proved to be a formative experience. As a fellow, he was able to work on numerous projects aimed at improving communities with the help of labor unions, Fortune 100 companies, non-profits, and local and federal governments. When he returned home for summer breaks, he worked at the U.S. Attorney’s Office in its civil fraud division and as a summer associate at Paul Hastings.

While in law school, Brent interned at the Institute on Religion and Public Policy, where he drafted testimony, affidavits, and declarations for human rights cases. He penned a resolution on the imprisonment of outspoken human trafficking critic Sigma Huda, which passed in the House of Representatives. Brent was also intensely involved in the Georgetown Law Trial Advocacy Program. He earned the title of being one of the institution’s most successful mock trial advocates and ended up serving as its managing director.

Before joining Baum Hedlund Aristei & Goldman, Attorney Wisner clerked for the Honorable Helen Gillmor in the U.S. District Court for the District of Hawaii, where he worked on several criminal and civil jury trials and gained invaluable appellate court experience when the judge sat on the U.S. Court of Appeals for the Ninth Circuit.

Practice Areas
  • 70%Class Action/Mass Torts: Plaintiff
  • 20%Personal Injury - Products: Plaintiff
  • 10%Personal Injury - General: Plaintiff
Focus Areas

Class Actions, Toxic Torts, Pharmaceutical, Personal Injury - Plaintiff, Wrongful Death

Selections

6 Years Rising Stars
  • Rising Stars: 2016 - 2021

Articles about R. Brent Wisner appearing in Super Lawyers

About R. Brent Wisner

First Admitted: 2011, California

Professional Webpage: https://www.baumhedlundlaw.com/attorneys/r-brent-wisner/

Other Outstanding Achievements

  • Government Service: Judicial Extern, Hon. Marian Blank Horn, United States Court of Federal Claims, Washington, D.C., 2009
  • Government Service: Summer Extern, United States Attorney’s Office, Civil Fraud Division, Los Angeles, California, 2008
  • Government Service: Law Clerk, Hon. Helen Gillmor, United States District Court, Honolulu, Hawaii, 2010 – 2012
  • Government Service: Brian Ohleyer Legislative Intern, Office of United States Senator Barbara Boxer, Washington, D.C., 2004 – 2005

Educational Background

  • Juris Doctor - Georgetown University Law Center, Washington, D.C. , 2010
  • Master of Public Policy - Georgetown McCourt School of Public Policy, Washington, D.C., 2010
  • Georgetown Public Policy Review, Executive Editor
  • Mock Trial: Georgetown Law Barristers’ Council, Trial Advocacy, Managing Director
  • University of California, Los Angeles, 2005 (Bachelor of Arts in Philosophy and Political Science), 2005

Bar/Professional Activity

  • California, 2011
  • U.S. District Court, Northern District of California, 2012
  • U.S. Dist. Court, Central District of California, 2013
  • U.S. Dist. Court, Southern District of California, 2013
  • U.S. Court of Appeals, First Circuit, 2013
  • U.S. Dist. Court, Eastern District of California, 2013
  • U.S. Court of Appeals, Seventh Circuit, 2014
  • U.S. Court of Appeals, Ninth Circuit, 2014
  • U.S. Supreme Court, 2014
  • Trial Co-Lead Counsel, Hagen-Brown vs Eli Lilly (Cymbalta withdrawal lawsuit), Richmond, Virginia, 2015
  • U.S. District Court, Southern District of Indiana, 2015
  • U.S. District Court, Western District of Wisconsin, 2016
  • U.S. District Court, District of Colorado, 2016
  • U.S. District Court, Northern District of Illinois, 2017
  • Trial Co-Lead Counsel, Wendy B. Dolin vs GlaxoSmithKline LLC (generic Paxil suicide lawsuit), Chicago, Illinois, 2017
  • Trial Co-Lead Counsel, Dewayne “Lee” Johnson vs Monsanto Company (1st Roundup cancer verdict $289.2 million), San Francisco, California, 2018
  • Trial Counsel, Hardeman vs. Monsanto Company (2nd Roundup cancer lawsuit trial), San Francisco, California, 2019
  • Trial Co-Lead Counsel, Pilliod et al. v. Monsanto.Company (3rd Roundup cancer verdict $2.055 billion), Oakland, California, 2019
  • Member, Practices and Procedures Team, In re Zantac/Ranitidine NDMA Litigation, MDL No. 2924 (U.S. District Court, Southern District of Florida), 2020
  • U.S. Court of Appeals, Eleventh Circuit, 2020
  • District of Columbia, 2021
  • Co-Lead Plaintiffs’ Liaison Counsel for the Ranitidine Product Cases, also known as the Ranitidine (Zantac) Judicial Council Coordinated Proceedings (JCCP 5150), California Superior Court for the County of Alameda, California, 2021-, 2021
  • The District of Columbia Court of Appeals, 2021
  • State Bar of California
  • Consumer Attorneys of California
  • Consumer Attorneys of Los Angeles
  • San Francisco Trial Lawyers Association
  • American Association for Justice: Herbicides and Pesticides Litigation Group
  • Federal Bar Association: Federal Litigation Section - Younger Lawyer Division
  • Plaintiffs’ Steering Committee, Administrator and Co-Lead Counsel for the Roundup Products Casesknown as the Roundup Judicial Council Coordinated Proceedings (JCCP 4953), California Superior Court for the County of Alameda, California, 2018 – present
  • Co-Chair Zantac Litigation Group, AAJ – American Association for Justice, 2020 – present
  • Liaison Counsel to Federal MDL-2741 In Re: Roundup Products Liability Litigation for Roundup JCCP 4953 Alameda 2018 – present
  • Plaintiffs’ Steering Committee / Liaison Counsel for the Cymbalta Drug Cases JCCP 4825 Los Angeles 2015 – present

Pro bono/Community Service

  • Briefing before Parliament of Canada’s Green Party of Canada about the $289M Monsanto Roundup cancer verdict and the Monsanto Papers at Parliament Hill, Ottawa, January 30, 2019, 2019
  • Briefing in Brussels-  Attorney Wisner, his law partner, Michael Baum, and two clients, Teri McCall and John Barton, traveled to Brussels by invitation to meet with and brief EU press, lawmakers from Germany and France, and staffers for various Members of European Parliaments (MEPs). They arrived just days before a hearing organized by EU environmental and agricultural committees to discuss their firm’s release of the Monsanto Papers and allegations that Monsanto unduly influenced studies on glyphosate, the active ingredient in Roundup. They warned officials about the cancer risk associated with glyphosate and Roundup. Attorneys Wisner and Baum also sent a letter to EU officials requesting they conduct an official inquiry into Monsanto’s manipulation of science and potential collusion with regulators. Belgium, October 4-5, 2017, 2017
  • Published the Monsanto Papers - Brent’s advocacy isn’t limited to the courtroom. During the Monsanto litigation, Brent and his firm worked to declassify and publish internal Monsanto documents obtained during discovery. These documents, known as the “Monsanto Papers,” became the subject of dozens of investigative journalism articles in the New York Times, Wall Street Journal, and many others. According to the unsealed court documents now known throughout the world as the Monsanto Papers, the agrochemical giant deployed several tactics to conceal the link between Roundup and cancer, including an operation called “Freedom to Operate.” In numerous media interviews discussing the documents, Wisner noted that Monsanto buried its own internal studies linking Roundup to cancer, then ghostwrote “scientific” studies declaring Roundup is safe. When scientists released independent studies that concluded Roundup is dangerous, the company spent millions attacking and “discrediting” them. This evidence and the verdicts have changed how the world questions the safety of Roundup, resulting in regulatory changes, restrictions and bans of glyphosate across the globe. https://www.baumhedlundlaw.com/toxic-tort-law/monsanto-roundup-lawsuit/monsanto-secret-documents/, 2017

Verdicts/Settlements

  • $10.9 Billion Monsanto Roundup Cancer Settlements - Baum Hedlund was one of the select few law firms in the country to negotiate a settlement with Bayer AG to resolve many thousands of pending Roundup cancer lawsuits. Each of the law firms completed separate agreements, which added up to a total of $10.9 billion. Baum Hedlund’s resolution resolved all of its Roundup cases pending in any jurisdiction, including California and the federal multi-district litigation. Baum Hedlund senior shareholder and trial lawyer R. Brent Wisner helped negotiate the Baum Hedlund's settlement. , 2020
  • $2.055 Billion Verdict - Pilliod et al. v. Monsanto Company, Superior Court of California, County of Alameda, Case No. RG17862702, JCCP No. 4953. Pilliod et al. v. Monsanto Co. was the third Monsanto Roundup lawsuit to proceed to trial. Brent Wisner was co-lead trial counsel for Alva and Alberta Pilliod, a couple in their 70s who alleged exposure to Roundup caused them to develop non-Hodgkin lymphoma. Brent delivered the opening and closing statements, and presented most of the scientific evidence and cross-examination of Monsanto’s experts. The jury returned a verdict of $2.055 billion in favor of the Pilliods, finding that exposure to Roundup caused their cancer and that Monsanto failed to warn consumers of this severe health hazard. The jury also found that Monsanto acted with malice, oppression or fraud and should be punished for its conduct., 2019
  • $289 Million Groundbreaking Verdict. Dewayne Johnson v. Monsanto Company (case no. CGC-16-550128) Unanimous $289.2 million jury verdict against Monsanto Company This was a groundbreaking $289.2 million jury verdict in San Francisco Superior Court against Monsanto for causing Dewayne "Lee" Johnson's non-Hodgkin lymphoma due to exposure to a Monsanto glyphosate-based herbicide called Roundup. The jury ordered Monsanto to pay $39.2 million in compensatory damages and $250 million in punitive damages for failing to warn consumers that exposure to Roundup weed killer causes cancer. Monsanto appealed the verdict and Johnson cross appealed. On July 20, 2020, the First Circuit Court of Appeals upheld the verdict against Monsanto but reduced Mr. Johnson’s award to $20.5 million. Mr. Johnson was represented by The Miller Firm, LLC, Baum Hedlund Aristei & Goldman, PC and Audet & Partners LLP., 2018
  • $3 Million Verdict. Dolin v. SmithKline Beecham Corp. et al., case number 1:12-cv-06403, in the U.S. District Court for the Northern District of Illinois. On April 20, 2017 a federal jury awarded $3 million to Wendy Dolin, resolving allegations in the trial of Dolin v. Smithkline Beecham Corp. (D/B/A GlaxoSmithKline-GSK) over the (generic Paxil) paroxetine-induced wrongful death of Wendy Dolin’s late husband, Stewart Dolin, who was a partner at the Chicago law firm Reed Smith when he took his own life in 2010. Dolin is represented by Baum Hedlund Aristei & Goldman and Rapoport Law Offices. This verdict was overturned some years later on appeal., 2017

Videos

  • Bayer AG agreed to settle U.S. lawsuits claiming that its widely-used weed killer Roundup caused cancer for as much as $10.9 billion after more than a year of talks, resolving litigation that has hit the company's share price. June 24, 2020, France 24 | Bayer settles Roundup cancer lawsuits for up to $10.9 billion, 2020
  • The FDA has stated that it is investigating Zantac cancer risks after testing of Zantac (ranitidine) tablets found a cancer-causing chemical up to 3,000 times greater than the FDA’s daily intake limit. The carcinogenic chemical present in Zantac, known as N-nitrosodimethylamine (NDMA), was discovered in the process of manufacturing rocket fuel. NDMA hasn’t been studied in humans because it is so carcinogenic, but in all the animal studies show that animals that are exposed to NDMA actually get cancer. If you took Zantac and developed cancer, you need an experienced personal injury attorney on your side. The attorneys at Baum, Hedlund, Aristei & Goldman have decades of experience holding big corporations accountable for concealing the health risks of consumer products. Across all areas of practice, the firm has obtained more than $4 billion in verdicts and settlements on behalf of clients. Our past performance, verdicts or settlements do not constitute a guarantee, warranty, or prediction regarding the outcome of future legal matters., What Do Zantac and Rocket Fuel Have in Common?, 2019
  • U.S. agribusiness giant Monsanto has been ordered to pay its highest damages yet in a massive lawsuit over the popular weed killer Roundup. A jury ordered Monsanto to pay more than $2 billion in punitive damages to Alva and Alberta Pilliod, a couple who were both diagnosed with non-Hodgkin’s lymphoma cancer after using Roundup on their properties for decades. Monsanto is owned by German pharmaceutical giant Bayer. The main ingredient in the weed killer Roundup, glyphosate, is said to cause the cancer. Attorneys estimate that there are thousands of similar cases against Roundup pending in courts around the country. Last year, a jury in California ordered Monsanto to pay $289 million in damages to a school groundskeeper who developed cancer after regularly using Roundup. The 46-year-old man, Dewayne Johnson, also has non-Hodgkin’s lymphoma. The EPA says that glyphosate is not carcinogenic, but other scientific studies and the World Health Organization have found that human exposure can in fact lead to cancer. We speak with attorney Brent Wisner, co-lead trial counsel for Alva and Alberta Pilliod., Democracy Now | As EPA Insists Weed Killer Roundup is Safe, a Jury Orders Monsanto to Pay $2B to Couple With Cancer, 2019
  • A California man who was diagnosed with cancer says he took the heartburn medication Zantac everyday for a decade. Walter Hansen was diagnosed last year and says he now believes Zantac was the cause. Mr. Hansen and his lawyer, Brent Wisner, talk about his lawsuit., Spectrum News - In Focus California | CA Man Says Zantac Medication Caused His Cancer, 2019
  • Baum, Hedlund, Aristei & Goldman attorney R. Brent Wisner discusses the latest revelations surrounding the popular drug Zantac (ranitidine). How did the FDA find out about the link between Zantac and cancer? What do Zantac and rocket fuel have in common? Is Zantac causing a cancer epidemic? Wisner answers your Zantac questions in this short video. R. Brent Wisner was co-lead trial counsel in two of the first three Monsanto Roundup lawsuits to proceed to trial, which resulted in landmark verdicts against Monsanto worth more than $2.34 billion. He and his colleagues at Baum, Hedlund, Aristei & Goldman know how to win big cases against big companies. If you took Zantac and developed cancer, you need an experienced personal injury attorney on your side. The attorneys at Baum, Hedlund, Aristei & Goldman have decades of experience holding big corporations accountable for concealing the health risks of consumer products. Across all areas of practice, the firm has obtained more than $4 billion in verdicts and settlements on behalf of clients. Our past performance, verdicts or settlements do not constitute a guarantee, warranty, or prediction regarding the outcome of future legal matters., Trial Lawyer Brent Wisner Discusses Zantac (Ranitidine) Link to Cancer, 2019
  • Brent Wisner was the lead attorney in Lee Johnson's case which went to trial in California last year. A landmark verdict found that Roundup had caused Lee's cancer - and Brent Wisner believes there will be thousands more people coming forward to take on manufacturer Monsanto. September 9, 2019, 60 Minutes Australia | First man to successfully sue Roundup for causing cancer , 2019
  • Video deposition of William Reeves, Global Health and Safety Issues Management Lead at Bayer Crop Science. This deposition was played during the trial of Pilliod et al. v. Monsanto Company. Alva and Alberta Pilliod, a California couple in their 70s, alleged exposure to Monsanto’s Roundup weed killer caused them to develop non-Hodgkin lymphoma. After approximately 7 weeks of trial proceedings, a California jury rendered a $2.055 billion verdict in favor of the Pilliods, finding that exposure to Roundup causes cancer and that Monsanto (now Bayer) failed to warn consumers of this severe health hazard. Importantly, the jury also found that Monsanto acted with malice, oppression or fraud, and should be punished for its conduct., Trial lawyer Brent Wisner conducts deposition of Monsanto Scientist William Reeves Deposition | Pilliod Monsanto, 2019
  • Video deposition of Michael Koch, Monsanto and Bayer Crops Science toxicologist. This deposition was played during the trial of Pilliod et al. v. Monsanto Company. Alva and Alberta Pilliod, a California couple in their 70s, alleged exposure to Monsanto’s Roundup weed killer caused them to develop non-Hodgkin lymphoma. After approximately 7 weeks of trial proceedings, a California jury rendered a $2.055 billion verdict in favor of the Pilliods, finding that exposure to Roundup causes cancer and that Monsanto (now Bayer) failed to warn consumers of this severe health hazard. Importantly, the jury also found that Monsanto acted with malice, oppression or fraud, and should be punished for its conduct. , Trial lawyer Brent Wisner conducts deposition of Monsanto Scientist Michael Koch Deposition 1.11.2019 | Pilliod Monsanto Trial, 2019
  • Dr. Christopher Portier testified as an expert witness for the plaintiff in the case of Edwin Hardeman v. Monsanto Company (now Bayer). The Hardeman trial began on February 25, 2019 and ended with a unanimous verdict of $80M for Mr. Hardeman on March 27, 2019. Dr. Portier holds a Ph.D. in Biostatistics (with a minor in Epidemiology). For over three decades, Dr. Portier held prominent leadership positions in the U.S. government that combined the disciplines of toxicology, statistics and epidemiology, including: • Associate Director of the National Institute of Environmental Health Sciences (NIEHS) National Toxicology Program and thus the nation’s chief toxicologist, among other roles at NIEHS. • Director of the National Center for Environmental Health, Center for Disease and Prevention. • Director of the Agency for Toxic Substances and Disease Registry (ATSDR). This series of seven videos contains the witness-only versions of what was played at the Hardeman trial in Phase 1 and Phase 2. They are numbered in the order of play. Among the many things Dr. Portier testified about at the Hardeman trial, he talked about a report on glyphosate prepared by Dr. James Parry at Monsanto’s request. Dr. Parry was a genetic toxicologist that Monsanto hired as a consultant in 1999 to look at data on genetic toxicity as associated with glyphosate and glyphosate formulations. Dr. Parry found strong evidence suggesting that glyphosate is genotoxic. He suggested that Monsanto conduct more studies to clarify the issue. Monsanto refused. Monsanto never published Dr. Parry’s report and never shared his findings with the U.S. Environmental Protection Agency (EPA). Dr. Portier also testified that the EPA did follow all of its rules in evaluating glyphosate. In addition, he testified that glyphosate is a promoter of carcinogenesis (the formation of cancer). , Trial lawyer Brent Wisner conducts deposition of Dr. Christopher Portier Video Testimony #1 of 7 | Hardeman v. Monsanto Trial, 2019
  • Dr. Christopher Portier testified as an expert witness for the plaintiff in the case of Edwin Hardeman v. Monsanto Company (now Bayer). The Hardeman trial began on February 25, 2019 and ended with a unanimous verdict of $80M for Mr. Hardeman on March 27, 2019. Dr. Portier holds a Ph.D. in Biostatistics (with a minor in Epidemiology). For over three decades, Dr. Portier held prominent leadership positions in the U.S. government that combined the disciplines of toxicology, statistics and epidemiology, including: • Associate Director of the National Institute of Environmental Health Sciences (NIEHS) National Toxicology Program and thus the nation’s chief toxicologist, among other roles at NIEHS. • Director of the National Center for Environmental Health, Center for Disease and Prevention. • Director of the Agency for Toxic Substances and Disease Registry (ATSDR). This series of seven videos contains the witness-only versions of what was played at the Hardeman trial in Phase 1 and Phase 2. They are numbered in the order of play. Among the many things Dr. Portier testified about at the Hardeman trial, he talked about a report on glyphosate prepared by Dr. James Parry at Monsanto’s request. Dr. Parry was a genetic toxicologist that Monsanto hired as a consultant in 1999 to look at data on genetic toxicity as associated with glyphosate and glyphosate formulations. Dr. Parry found strong evidence suggesting that glyphosate is genotoxic. He suggested that Monsanto conduct more studies to clarify the issue. Monsanto refused. Monsanto never published Dr. Parry’s report and never shared his findings with the U.S. Environmental Protection Agency (EPA). Dr. Portier also testified that the EPA did follow all of its rules in evaluating glyphosate. In addition, he testified that glyphosate is a promoter of carcinogenesis (the formation of cancer). , Trial lawyer Brent Wisner conducts deposition of Dr. Christopher Portier Video Testimony #2 of 7 | Hardeman v. Monsanto Trial, 2019
  • Dr. Christopher Portier testified as an expert witness for the plaintiff in the case of Edwin Hardeman v. Monsanto Company (now Bayer). The Hardeman trial began on February 25, 2019 and ended with a unanimous verdict of $80M for Mr. Hardeman on March 27, 2019. Dr. Portier holds a Ph.D. in Biostatistics (with a minor in Epidemiology). For over three decades, Dr. Portier held prominent leadership positions in the U.S. government that combined the disciplines of toxicology, statistics and epidemiology, including: • Associate Director of the National Institute of Environmental Health Sciences (NIEHS) National Toxicology Program and thus the nation’s chief toxicologist, among other roles at NIEHS. • Director of the National Center for Environmental Health, Center for Disease and Prevention. • Director of the Agency for Toxic Substances and Disease Registry (ATSDR). This series of seven videos contains the witness-only versions of what was played at the Hardeman trial in Phase 1 and Phase 2. They are numbered in the order of play. Among the many things Dr. Portier testified about at the Hardeman trial, he talked about a report on glyphosate prepared by Dr. James Parry at Monsanto’s request. Dr. Parry was a genetic toxicologist that Monsanto hired as a consultant in 1999 to look at data on genetic toxicity as associated with glyphosate and glyphosate formulations. Dr. Parry found strong evidence suggesting that glyphosate is genotoxic. He suggested that Monsanto conduct more studies to clarify the issue. Monsanto refused. Monsanto never published Dr. Parry’s report and never shared his findings with the U.S. Environmental Protection Agency (EPA). Dr. Portier also testified that the EPA did follow all of its rules in evaluating glyphosate. In addition, he testified that glyphosate is a promoter of carcinogenesis (the formation of cancer). , Trial lawyer Brent Wisner conducts deposition of Dr. Christopher Portier Video Testimony #3 of 7 | Hardeman v. Monsanto Trial, 2019
  • Dr. Christopher Portier testified as an expert witness for the plaintiff in the case of Edwin Hardeman v. Monsanto Company (now Bayer). The Hardeman trial began on February 25, 2019 and ended with a unanimous verdict of $80M for Mr. Hardeman on March 27, 2019. Dr. Portier holds a Ph.D. in Biostatistics (with a minor in Epidemiology). For over three decades, Dr. Portier held prominent leadership positions in the U.S. government that combined the disciplines of toxicology, statistics and epidemiology, including: • Associate Director of the National Institute of Environmental Health Sciences (NIEHS) National Toxicology Program and thus the nation’s chief toxicologist, among other roles at NIEHS. • Director of the National Center for Environmental Health, Center for Disease and Prevention. • Director of the Agency for Toxic Substances and Disease Registry (ATSDR). This series of seven videos contains the witness-only versions of what was played at the Hardeman trial in Phase 1 and Phase 2. They are numbered in the order of play. Among the many things Dr. Portier testified about at the Hardeman trial, he talked about a report on glyphosate prepared by Dr. James Parry at Monsanto’s request. Dr. Parry was a genetic toxicologist that Monsanto hired as a consultant in 1999 to look at data on genetic toxicity as associated with glyphosate and glyphosate formulations. Dr. Parry found strong evidence suggesting that glyphosate is genotoxic. He suggested that Monsanto conduct more studies to clarify the issue. Monsanto refused. Monsanto never published Dr. Parry’s report and never shared his findings with the U.S. Environmental Protection Agency (EPA). Dr. Portier also testified that the EPA did follow all of its rules in evaluating glyphosate. In addition, he testified that glyphosate is a promoter of carcinogenesis (the formation of cancer). , Trial lawyer Brent Wisner conducts deposition of Dr. Christopher Portier Video Testimony #4 of 7 | Hardeman v. Monsanto Trial, 2019
  • Dr. Christopher Portier testified as an expert witness for the plaintiff in the case of Edwin Hardeman v. Monsanto Company (now Bayer). The Hardeman trial began on February 25, 2019 and ended with a unanimous verdict of $80M for Mr. Hardeman on March 27, 2019. Dr. Portier holds a Ph.D. in Biostatistics (with a minor in Epidemiology). For over three decades, Dr. Portier held prominent leadership positions in the U.S. government that combined the disciplines of toxicology, statistics and epidemiology, including: • Associate Director of the National Institute of Environmental Health Sciences (NIEHS) National Toxicology Program and thus the nation’s chief toxicologist, among other roles at NIEHS. • Director of the National Center for Environmental Health, Center for Disease and Prevention. • Director of the Agency for Toxic Substances and Disease Registry (ATSDR). This series of seven videos contains the witness-only versions of what was played at the Hardeman trial in Phase 1 and Phase 2. They are numbered in the order of play. Among the many things Dr. Portier testified about at the Hardeman trial, he talked about a report on glyphosate prepared by Dr. James Parry at Monsanto’s request. Dr. Parry was a genetic toxicologist that Monsanto hired as a consultant in 1999 to look at data on genetic toxicity as associated with glyphosate and glyphosate formulations. Dr. Parry found strong evidence suggesting that glyphosate is genotoxic. He suggested that Monsanto conduct more studies to clarify the issue. Monsanto refused. Monsanto never published Dr. Parry’s report and never shared his findings with the U.S. Environmental Protection Agency (EPA). Dr. Portier also testified that the EPA did follow all of its rules in evaluating glyphosate. In addition, he testified that glyphosate is a promoter of carcinogenesis (the formation of cancer). , Trial lawyer Brent Wisner conducts deposition of Dr. Christopher Portier Video Testimony #6 of 7 | Hardeman v. Monsanto Trial, 2019
  • Dr. Christopher Portier testified as an expert witness for the plaintiff in the case of Edwin Hardeman v. Monsanto Company (now Bayer). The Hardeman trial began on February 25, 2019 and ended with a unanimous verdict of $80M for Mr. Hardeman on March 27, 2019. Dr. Portier holds a Ph.D. in Biostatistics (with a minor in Epidemiology). For over three decades, Dr. Portier held prominent leadership positions in the U.S. government that combined the disciplines of toxicology, statistics and epidemiology, including: • Associate Director of the National Institute of Environmental Health Sciences (NIEHS) National Toxicology Program and thus the nation’s chief toxicologist, among other roles at NIEHS. • Director of the National Center for Environmental Health, Center for Disease and Prevention. • Director of the Agency for Toxic Substances and Disease Registry (ATSDR). This series of seven videos contains the witness-only versions of what was played at the Hardeman trial in Phase 1 and Phase 2. They are numbered in the order of play. Among the many things Dr. Portier testified about at the Hardeman trial, he talked about a report on glyphosate prepared by Dr. James Parry at Monsanto’s request. Dr. Parry was a genetic toxicologist that Monsanto hired as a consultant in 1999 to look at data on genetic toxicity as associated with glyphosate and glyphosate formulations. Dr. Parry found strong evidence suggesting that glyphosate is genotoxic. He suggested that Monsanto conduct more studies to clarify the issue. Monsanto refused. Monsanto never published Dr. Parry’s report and never shared his findings with the U.S. Environmental Protection Agency (EPA). Dr. Portier also testified that the EPA did follow all of its rules in evaluating glyphosate. In addition, he testified that glyphosate is a promoter of carcinogenesis (the formation of cancer). , Trial lawyer Brent Wisner conducts deposition of Dr. Christopher Portier Video Testimony #7 of 7 | Hardeman v. Monsanto Trial, 2019
  • The secret tactics used by global chemical giant Monsanto, to protect its billion-dollar business and its star product, the weed killer, Roundup."Monsanto has engaged in a systematic and deliberate campaign to attack any science that says their product is not safe and to attack any scientist that has the courage to say something." Lawyer When it was launched four decades ago, Roundup was hailed as a miracle product, a revolutionary herbicide that would transform farming and keep home gardeners happy too. And it came with the promise that it was safe."The broad advertising claims that Monsanto was advancing in those days (was) that somehow their Roundup product was entirely safe, biodegradable, safe for pets and children, and less dangerous than table salt." Former NY Attorney General Now a landmark US court case has made headlines worldwide, with a jury declaring Roundup was a substantial factor in causing a school ground keeper's terminal cancer and that the company had failed to warn of the risk posed by the product., Four Corners Australia | The Monsanto Papers , 2018
  • California jurors have awarded $289 million in a historic verdict against Monsanto in the case of a school groundskeeper who developed cancer after using its weed killer, Roundup. We speak with Brent Wisner, the lead trial counsel for Dewayne Lee Johnson, who has non-Hodgkin’s lymphoma. Doctors say he is unlikely to live past 2020. Johnson’s was the first lawsuit to go to trial alleging glyphosate causes cancer. Filed in 2016, it was fast-tracked for trial due to the severity of his illness., Democracy Now | Historic Ruling Against Monsanto Finds Company Acted with “Malice” Against Groundskeeper with Cancer, 2018
  • Roundup cancer attorney Brent Wisner from the law firm of Baum, Hedlund, Aristei & Goldman delivers the closing statement in the trial of Dewayne “Lee” Johnson v. Monsanto Company. On Aug. 10, 2018, a San Francisco jury returned a verdict of $289 million, ordering Monsanto to pay $39.2 million in compensatory damages and $250 million in punitive damages for failing to warn consumers that exposure to Roundup weed killer causes cancer. The jury unanimously found that Monsanto’s glyphosate-based Roundup weed killer caused Mr. Johnson to develop non-Hodgkin lymphoma, and that Monsanto acted with malice, oppression or fraud and should be punished for its conduct., Closing Statement in trial of Johnson v. Monsanto | Roundup Cancer Attorney Brent Wisner , 2018
  • Could the foods you eat or the weed killer you use give you cancer? In a Doctors’ exclusive, we discuss a lawsuit claiming the most widely-used herbicide in the world, glyphosate, led to Non-Hodgkin Lymphoma in an alleged victim. Hear from the attorney in the case and the widow of a farmer who claims agricultural chemicals cut his life short. Find out why chemical companies say they stand by the safety of their product. The Doctors help you sort through the science and offer practical solutions starting in the grocery store!, The Drs. Exclusive | Glyphosate Lawsuit Claims Cancer Link, 2017
  • , Roundup Litigation, 2016
  • , Does Roundup Cause Cancer?, 2016
  • , What is Roundup?, 2016

Scholarly Lectures/Writings

  • Baby Food Litigation: The Personal-Injury Component of the Litigation, Speaker, Baby Food Litigation: The Personal-Injury Component of the Litigation, Harris Martin CLE Conference, Harris Martin’s Webinar Series: Baby Food Litigation, Legal, 2021
  • First Annual Mass-Tort MDL Flash Points, Speaker, First Annual Mass-Tort MDL Flash Points, The George Washington University, Challenges for the Next Generation of Transferee MDL Judges (Invitation-Only) Conference, James F. Humphreys Complex Litigation Center, Washington, D.C., Legal, 2021
  •  Baby Foods: A Personal Injury Perspective, Speaker, Baby Foods: A Personal Injury Perspective, Mass Torts Made Perfect, MTMP Connect Webinar, Legal, 2021
  • Deep Dive: Products Liability - Trial Overview - Lowering the Hammer/Lessons from the Monsanto Trials, Speaker, Deep Dive: Products Liability - Trial Overview - Lowering the Hammer/Lessons from the Monsanto Trials, CAALA - Consumer Attorneys Association of Los Angeles, CAALA’s Annual Las Vegas Convention, Las Vegas, Nevada, Legal, 2021
  • Alternative Jurisdictions to the MDL in the Zantac Litigation, Speaker, Alternative Jurisdictions to the MDL in the Zantac Litigation, MTMP - Mass Torts Made Perfect, MTMP Connect Webinar via Zoom, Legal, 2021
  • The Monsanto Story: How I Became the Youngest Attorney to Ever Obtain a Multi-Billion Dollar Verdict, Speaker, The Monsanto Story: How I Became the Youngest Attorney to Ever Obtain a Multi-Billion Dollar Verdict, SFTLA - San Francisco Trial Lawyers Association, New Lawyers Division Adventure Conference, Virtual and in Santa Cruz, California, Legal, 2021
  • Zantac: Census, Criteria, and Case Update, Speaker, Zantac: Census, Criteria, and Case Update, MTMP – Mass Torts Made Perfect, MTMP Virtual Vegas Spring 2021, Legal, 2021
  • Harris Martin's MDL Conference in Austin, Texas on December 24, 2019, Moderator, Class Actions for Consumers & TPPs (Third-Party Payors), Harris Martin, 2020
  • Trial Attorneys: Open for Business – West Coast, Speaker, Trial Attorneys: Open for Business – West Coast, Senior Attorney Match, Podcast, Legal, 2020
  • Breaking down the 1st Monsanto Roundup trial and $289 verdict, Speaker, Breaking down the 1st Monsanto Roundup trial and $289 verdict, CaseAnalysis.com, Webinar, Legal, 2020
  • Zantac Census Plus, Speaker, Zantac Census Plus, Mass Torts Made Perfect Connect, Webinar, Legal, 2020
  • Zantac: A Major Health Crisis, Speaker, Zantac: A Major Health Crisis, Mass Torts Made Perfect Connect, Webinar, Legal, 2020
  • Zantac litigation, Speaker, Zantac litigation, Roundup litigation, Masters of Mass Tort, Conference, Ritz Carlton, Cancun, Legal, 2020
  • Status of the Zantac Litigation, Speaker, Status of the Zantac Litigation, AAJ – American Association for Justice, Rapid Response Webinar, Legal, 2020
  • Zantac: Diving into the Science (NDMA, Ranitidine, and the Risk of Cancer), Speaker, Zantac: Diving into the Science (NDMA, Ranitidine, and the Risk of Cancer), Harris Martin, Harris Martin’s MDL Conference: Zantac, Sex Trafficking and Emerging Mass Tort Litigation Agenda, Tampa, Florida, Legal, 2020
  • The Science: NDMA, Ranitidine, and the Risk of Cancer, Speaker, The Science: NDMA, Ranitidine, and the Risk of Cancer, Harris Martin, Harris Martin’s Zantac Litigation Conference, Miami Beach, Florida, Legal, 2020
  • Key New Mass Torts: Zantac, Paragard, and HIV Drugs, Speaker, Key New Mass Torts: Zantac, Paragard, and HIV Drugs, Anatomy of a Roundup Trial and the Upcoming Docket, Harris Martin, MDL Conference, Austin, Texas, Legal, 2019
  •  Zantac Attack: Over the Counter Carcinogen, Speaker, Zantac Attack: Over the Counter Carcinogen, Mass Torts Made Perfect, Seminar, The Bellagio, Las Vegas, Nevada, Legal, 2019
  • Roundup – Recent Blockbuster Verdicts, Speaker, Roundup – Recent Blockbuster Verdicts, San Francisco Trial Lawyers Association, Seminar, Westin S. Frances Hotel, San Francisco, Legal, 2019
  • Roundup Litigation: State of the Docket and What Comes Next, Speaker, Roundup Litigation: State of the Docket and What Comes Next, Harris Martin, Harris Martin’s Roundup Litigation Conference, The Brown Palace Hotel, Denver, Colorado, Legal, 2019
  • Roundup® Litigation: Trial Recap and Look Ahead, Speaker, Roundup® Litigation: Trial Recap and Look Ahead, American Association for Justice, American Association for Justice | Educational Seminar, AAJ Headquarters, Washington, D.C., Legal, 2019
  • Suing Monsanto: How a Team of Lawyers Won a Verdict Linking the Herbicide Roundup to Cancer  , Speaker, Suing Monsanto: How a Team of Lawyers Won a Verdict Linking the Herbicide Roundup to Cancer, UCLA School of Law, Emmett Institute on Climate Change & the Environment and The Resnick Center for Food Law & Policy, Lunchtime Event, UCLA Law Building, University of California, Los Angeles, School of Law, Legal, 2018
  • $289M Monsanto Roundup Verdict – Life After the Daubert Ruling and Johnson Trial, Speaker, $289M Monsanto Roundup Verdict – Life After the Daubert Ruling and Johnson Trial, The Johnson Trial and JCCP ( Judicial Council Coordination Proceedings), Harris Martin Publishing, Half-Day Roundup CLE (Continuing Legal Education), Loews Santa Monica Beach Hotel, Santa Monica, California, Legal, 2018
  • Recent $289M Monsanto Verdict, Speaker, Recent $289M Monsanto Verdict, Harvard University, Notable torts case discussion with Professor Jon Hanson’s Tort Law Class, Harvard Law School, Cambridge, Massachusetts, Legal, 2018
  • Challenging Court Secrecy in Medical Product Litigation, Speaker, Challenging Court Secrecy in Medical Product Litigation, Yale University, Conference, Yale Law School’s Collaboration for Research Integrity and Transparency (CRIT) program, Yale University’s Greenberg Conference Center, New Haven, Connecticut, Legal, 2018
  • Monsanto Roundup Litigation, Speaker, Monsanto Roundup Litigation, Mass Torts Made Perfect, MTMP Spectacular Fall Conference, Las Vegas, Nevada, Legal, 2017
  • Roundup Class Action, Speaker, Roundup Class Action, HarrisMartin, HarrisMartin’s Roundup® Litigation Conference Agenda, Chicago, Illinois, Legal, 2017
  • Cymbalta Withdrawal Litigation In re: Cymbalta (Duloxetine) Products Liability Litigation, Speaker, Cymbalta Withdrawal Litigation In re: Cymbalta (Duloxetine) Products Liability Litigation, American Association for Justice, AAJ Education’s Plaintiff-Only Hot Topics and Trends in Litigation Seminar, Charleston, South Carolina, Legal, 2014
  • Politics of Enforcement: How the Department of Justice Enforces the Civil False Claims Act, Author, Politics of Enforcement: How the Department of Justice Enforces the Civil False Claims Act, 17 GEO. PUB. POL’Y REV. 43-60, 2012, Legal, 2012
  • Judicial Activism? The Roberts Court in the Coming Term, Author, Judicial Activism? The Roberts Court in the Coming Term, GEO. PUB. POL’Y REV., Legal, 2009
  • Asylum Denied: Seeking Asylum in the Age of Terrorism, Author, Asylum Denied: Seeking Asylum in the Age of Terrorism, 12 GEO. PUB. POL’Y REV. 21, Legal, 2007
  • Expressing the Sense of the House of Representatives Regarding the Violation of the Human Rights of United Nations Special Rapporteur on Trafficking in Persons, Sigma Huda, and Others, by the Caretaker Government of Bangladesh, Author, Expressing the Sense of the House of Representatives Regarding the Violation of the Human Rights of United Nations Special Rapporteur on Trafficking in Persons, Sigma Huda, and Others, by the Caretaker Government of Bangladesh, H. R. 761, 110th Cong., Legal, 2007

Honors/Awards

  • , Clarence Darrow Award, MTMP-Mass Torts Made Perfect, 2021
  • , The American Lawyer’s West Trailblazers, American Lawyer, 2021
  • , Top List: Up-And-Coming-100, Southern California Rising Stars (featured on magazine cover), 2021
  • California Power House, Law360 Regional Powerhouse Series, 2021
  • , Top Plaintiffs Lawyers in California, Daily Journal, 2020
  • , Product Liability Practice Group of the Year , Law360, 2020
  • MVP of the Year 2020, Product Liability, Law360, 2020
  • , Top 100 Lawyers in California , Daily Journal, 2020
  • , Elite Trial Lawyers Mass Torts Law Firm of the Year, Finalist, ALM and National Law Journal, 2020
  • , Top 25, President, Products Liability Trial Lawyers Association, 2020
  • , Verdicts Hall of Fame Inductee, The National Law Journal and VerdictSearch, 2020
  • , Civil Plaintiffs Trial Lawyer of the Year, National Trial Lawyers and ALM, 2019
  • , America’s 50 Most Influential Trial Lawyers, Trial Lawyer Magazine and The National Law Journal, 2019
  • , Top 100 Verdicts, ALM, National Law Journal, Verdict Search (Pilliod et al. v. Monsanto Co.), 2019
  • , Trial Lawyer of the Year Finalist, Consumer Attorneys Association of Los Angeles, 2019
  • , Winning Litigators , The National Law Journal, 2019
  • , Top 40 Under 40 Attorneys in California, Daily Journal (lifetime award), 2019
  • , Number 1 Verdict in California in 2019, Topverdict.com (Pilliod et al. v. Monsanto Co.), 2019
  • , Top 10 Verdicts in California in 2019, Topverdict.com (Pilliod et al. v. Monsanto Co.), 2019
  • , Elite Trial Lawyers Mass Torts Trial Team of the Year, The National Law Journal and The Trial Lawyer Magazine, 2019
  • , Top Plaintiffs Lawyers in California, Daily Journal, 2019
  • , Trial Team of the Year , The National Trial Lawyers Top 100, 2019
  • , Top List: Up-And-Coming-100, Southern California Rising Stars, 2019
  • , Daily Journal Top Verdicts, Daily Journal , 2018
  • Number 1 Product Liability Verdict in California in 2018, Topverdict.com (Johnson v. Monsanto Co.), 2018
  • , Top 10 Personal Injury Verdicts in the U.S. in 2018, Topverdict.com (Johnson v. Monsanto Co.), 2018
  • , Top 100 Verdicts, ALM, National Law Journal, Verdict Search (Johnson v. Monsanto Co.), 2018
  • , CVN’s Top 10 Most Impressive Plaintiff Verdicts of 2018, CVN, 2018
  • , 2018 Elite Trial Lawyers, Winner Pharmaceutical Litigation, The National Law Journal, 2018
  • , Top List: Up-And-Coming-100, Southern California Rising Stars, 2018
  • , Top 100 Lawyers in California , Daily Journal , 2018
  • , Titan of the Plaintiffs Bar (lifetime award), Law360 , 2018
  • , The Round Table: America’s Most Influential Trial Lawyers, Trial Lawyer Magazine and The National Law Journal, 2018
  • , Top 10 Product Liability Verdicts in Illinois in 2017, Topverdict.com (Dolin v. GSK), 2017
  • , Top 100 Product Liability Verdicts in the U.S, Topverdict.com (Dolin v. GSK), 2017
  • 2021 - 2022, The Best Lawyers in America, Best Lawyers
  • 2016 – 2020, Selected: Southern California Super Lawyers, Rising Stars
  • , Listed, The Bar Register of Preeminent Lawyer, The Bar Register of Preeminent Lawyer
  • , Superb Score 10 out of 10, Avvo.com
  • , The National Trial Lawyers Top 40 Under 40, The National Trial Lawyers
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Office Location for R. Brent Wisner

80 E Sir Francis Drake Blvd.
Suite 3J
Larkspur, CA 94939

Phone: 415-873-4775

Last Updated: 10/30/2021

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