Karl C. Seman

Attorney Profile

Top Rated DUI-DWI Attorney in Garden City, NY

Grunwald & Seman, PC
 | 100 Garden City Plaza, suite 203
Garden City, NY 11530
Phone: 516-500-2548
Fax: 516-877-7463
Selected To Super Lawyers: 2012 - 2021
Licensed Since: 1984
Practice Areas:
  • Criminal Defense: DUI/DWI (40%),
  • Business Litigation (30%),
  • Criminal Defense (30%)
  • Free Consultation
Attorney Profile

A founder of Grunwald & Seman, P.C., Karl C. Seman focuses his practice exclusively on criminal defense matters. Based in Garden City, New York, he provides dedicated representation to people throughout Nassau and Suffolk counties who have been charged by the state or federal government with misdemeanor or felony offenses. The types of cases that Mr. Seman has been involved in during his career have included driving under the influence of alcohol or drugs, weapons violations, sex crimes, drug possession, child endangerment, larceny, murder, robbery, white collar crimes, and vehicular manslaughter. Prior to entering private practice, he worked for the Nassau County District Attorney's Office, where he gained significant experience prosecuting felonies.

Mr. Seman has had several articles relating to criminal defense published, and he has delivered presentations on DWI defense tactics to groups of fellow attorneys. Admitted to practice before all New York state courts, he is also admitted to practice before the U.S. District Courts for the Northern, Eastern, Southern and Western Districts of New York, the U.S. Court of Appeals for the 2nd Circuit, and the Supreme Court of the United States. Highly regarded by his colleagues for his professionalism and successful track record, Mr. Seman has received a "Superb" peer review rating through Avvo.

He is also a long-time and respected adjunct professor of Law and Criminal Justice, highly rated, at the NYIT, New York Teck.

Majoring in criminal justice, Mr. Seman attended Northeastern University in Boston, and he received a Bachelor of Science summa cum laude in 1980. Upon his graduation, he was inducted into the Phi Beta Kappa Society. His legal education came at American University Washington College of Law, and he was awarded his Juris Doctor in 1983. Mr. Seman's professional affiliations include the New York State Defenders Association, and he devotes considerable time to community affairs.

Since 1986 he has also assited those injured in motor vehicle crashes and has recovered money for those injured and their families

Practice Areas
  • 40%Criminal Defense: DUI/DWI
  • 30%Business Litigation
  • 30%Criminal Defense
Focus Areas

DUI/DWI, Non-Compete Agreements, Arrest & Arraignment, Assault & Battery, Criminal Fraud, Criminal Law, Drug & Alcohol Violations, Felony, Juvenile Delinquency, Misdemeanor, Motor Vehicle Offenses, Murder, Probation, Sex Offenses, Theft, Traffic Violations, Criminal Domestic Violence


Selected to Super Lawyers for 10 yearsbottom-image

Super Lawyers: 2012 - 2021

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About Karl Seman

Admitted: 1984, New York

Professional Webpage: https://www.gslawyers.com/karl-seman-esq/


  • SuperLawyers – 2013 to 2016  
  • Honors: Moot Court Judge, American University, Washington College of Law, Washington, District of Columbia, 1983
  • Fellow, Sociology Teaching

Special Licenses/Certifications:

  • National College for Driving While Under the Influence Defense

Bar/Professional Activity:

  • U.S. Court of Appeals 2nd Circuit, 1988
  • American Arbitration Association, New York, New York
  • Former Assistant District Attorneys Association
  • Nassau County Homicide, Major Felony Defense Panel, Assigned Counsel Plan
  • American Bar Association
  • U.S. District Court Southern District of New York, 1985
  • U.S. District Court Western District of New York, 1985
  • Better Business Bureau, Autoline Arbitration, Lemon Law Claims, Arbitrator
  • Nassau County Bar Association
  • Nassau County Bar Association, Attorney-Client Fee Dispute Conciliation, Chairman
  • New York Association
  • New York, 1984
  • U.S. District Court Northern District of New York, 1985
  • New York County Major Felony and Homicide Panel Assigned Counsel Plan
  • American Judges Association
  • New York State Trial Lawyers Association
  • U.S. Supreme Court, 1987
  • New York State Defender Association
  • U.S. District Court Eastern District of New York, 1985

Pro bono/Community Service:

  • Coach Mentor: State-Wide Mock Trial Competition (Kellenberg Memorial High School, Bellmore-Merrick High School, East Meadow High School)
  • The Hewlett House (subsidiary of 1 in 9)
  • The Long Island Breast Cancer Action Coalition
  • Mickey’ Corner (subsidiary of Michael’s Haven)
  • 1 and 9
  • Michael’s Haven

Scholarly Lectures/Writings:

  • DWI: Pre-Conviction License Suspension: Pringle Hearings
  • Lecturer, NCBA Speaker’s Program
  • Legal Instructor, State-Wide High School Trial Competition, NYS Bar Association
  • Legal Instructor, Man v. Machine
  • Legal Instructor, Intricacies of Cross Examination Defense
  • Legal Instructor and Lecturer, DWI criminal law for inexperienced attorneys
  • Adjunct Professor, Criminal Law and Procedure, (New York Institute of Technology)
  • DWI:-Pre-conviction License Suspensions and Hardship Hearings: Legal and Practical Analysis, The Attorney of Nassau County, September, Vol 4, No.: 1, 1996
  • Attorney Fees & Attorney-Client Fee Disputes: Mandatory and Voluntary Arbitrations, The Nassau Lawyer, The Journal of the Nassau County Bar Association, January, Vol 51 No.5, 2002
  • The Federal Courts: Habeas Corpus and Recent Meanings of Cause and Prejudice, 10 American Journal of Criminal Law, Univ. of Texas Law School, November 1982
  • Legal Instructor, Criminal and DWI Defense, NCBA
  • A Juvenile’s Waiver of the Privilege Against Self-Incrimination: A Federal and State Comparison, 10 American Journal of Criminal Law, Univ of Texas Law School, March, 1982


  • Helping those involved in car crashes and recovering money damages for them and their families, 2015

Representative Clients:


Educational Background:

  • Northeastern University, Boston, B.S. (Summa Cum Laude), Honors: Phi Kappa Phi, Honors: National Honor Society, Honors: Sears B. Condit Scholarship Award, Honors: Criminal Justice Achievement Award, Honors: National Criminal Justice Honor Society, Major: Criminal Justice, 1980

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Office Location for Karl C. Seman

100 Garden City Plaza
suite 203
Garden City, NY 11530

Phone: 516-500-2548

Fax: 516-877-7463

Karl C. Seman:

Last Updated: 5/4/2021

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