Karl Seman is a founding member of KCS Law and the kind of no-nonsense litigator you want on your side when the stakes are high. With over 35 years of experience in criminal and vehicular defense, Karl has seen it all—from traffic tickets and first-time DWIs to complex cases involving manslaughter or white-collar crime. What sets him apart is his "inside" perspective; he’s a former Felony Trial Assistant District Attorney, so he knows exactly how the prosecution builds a case. He’s even gone as far as completing the same 24-hour police training course that officers take to detect impaired drivers, giving him a massive advantage when challenging sobriety tests. Beyond the courtroom, Karl is deeply involved in school law, helping students navigate disciplinary hearings and special education needs. He’s also known for his work in theft defense, drawing on early career experience in retail investigations to protect clients from shoplifting or embezzlement charges. Karl is a mentor to other attorneys and an adjunct professor, but his primary focus is always on his clients. He believes in clear communication and straightforward fees, ensuring you always know where you stand. Whether he’s defending a major felony or advocating for a student’s future, Karl brings a practical, battle-tested approach to every case he handles in Nassau and Suffolk Counties.
Sociology Teaching
Professional Associations and Memberships
Nassau County Bar Association, Attorney-Client Fee Dispute Conciliation, Chairman
Nassau County Homicide, Major Felony Defense Panel, Assigned Counsel Plan
New York County Major Felony and Homicide Panel Assigned Counsel Plan
Better Business Bureau, Autoline Arbitration, Lemon Law Claims, Arbitrator
American Arbitration Association, New York, New York
American Judges Association
Nassau County Bar Association
Former Assistant District Attorneys Association
New York State Trial Lawyers Association
New York Association
American Bar Association
New York State Defender Association
Past Employment Positions
District Court, Nassau County, Judicial Arbitrator
Nassau County District Attorney's Office, Assistant District Attorney, January 1, 1984 - January 31, 1987
Abady & Jaffe, Madison Avenue, New York City, Senior Trial Counsel, November 1, 1987 - October 31, 1988
Newman, Schlau, Fitch & Burns, Lower Broadway, New York City, Senior Trial Associate, July 1, 1987 - October 31, 1987
Levine & Robinson, Mitchel Field, NY, Senior Trial Associate, January 1, 1987 - July 31, 1987
United States Attorney's Office, Washington D.C., Felony-Trials Division, Law Student Intern, 1982
Judge Henry F. Greene, Washington D.C. Superior Court, Law Student Intern, August 1, 1981 - December 31, 1981
Massachusetts Attorney General's Office, Civil Rights and Consumer Divisions, Boston, Intern, January 1, 1979 - April 30, 1979
Massachusetts Attorney General's Office, Civil Rights and Consumer Divisions, Boston, Intern, April 1, 1978 - June 30, 1978
Massachusetts Attorney General's Office, Civil Rights and Consumer Divisions, Boston, Intern, January 1, 1977 - April 30, 1977
Massachusetts Attorney General's Office, Civil Rights and Consumer Divisions, Boston, Intern, October 1, 1977 - December 31, 1977
First National Bank of Boston, June 1, 1979 - December 31, 1979
Arlington Massachusetts Police Services, July 1, 1977 - September 30, 1977.
