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William P. Lehner

(740) 660-4230

3783 Broadway, Grove City, OH 43123

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William handles criminal defense, domestic relations, civil litigation, trademark protection, intellectual property matters, and internet and unfair competition disputes. He advises startups on entity structure, formation, governance and financing, including business and commercial document preparation. 

William especially loves to work with clients to create a branding strategy and a strong portfolio of trademarks that adds value to their businesses. William helps businesses protect, enforce, and monetize their intellectual property assets. William practices before the Trademark Trial and Appeals Board. He prevents the importation of counterfeit goods by registering trademarks with the U.S. Customs and Border Protection. He has recovered domain names from cybersquatters. He advises on licensing, purchasing, transfers and commercialization of IP.

William started his career as a Patent Examiner where he was an expert on three-dimensional computer graphics and graphical user interfaces. He then joined and a patent boutique to do patent clearance searches. Next, he worked at two other large law firms obtaining trademark registrations and sending demand letters for trademark and copyright infringements. William founded Lehner Law LLC in 2020 because traditional law firms are inefficient and he wanted a free hand to innovate. 

William lives in Grove City with his wife and daughter.

Notable Cases

Successful dismissed several complaints against out of state businesses for lack of personal jurisdiction, including TCPA and breach of contract claims.

Protected a major toy manufacturer’s famous trademark on a doll by helping to shut down pornography websites that traded off of the doll’s likeness.

Worked for a major car manufacturer to prevent the importation of counterfeit airbags by registering trademarks with the US. Customs and Border Protection.

Helped a major retailer to rebrand generic trademarks to look as similar as possible to premium brands.


William interned for the Whitehall City Attorney’s Office where he helped prosecutors at the Mayor’s Court.


Capital University Law School, Juris Doctor, 2019

  • Honors: Treasurer, Federalist Society for Law & Public Policy Studies
  • Honors: AAJ Mock Trial Advocacy Competition
  • Honors: Herbert Wechsler National Criminal Moot Court Competition
  • Honors: General Litigation Clinic

James Madison University, BS in Computer Science, 2003


Ohio Supreme Court

United States District Court, Southern District of Ohio

Professional Associations

ARAG® Network Attorney

Federal Circuit Bar Association, PTAB and TTAB Committee, 2018-present

International Trademark Association

Ohio Association of Criminal Defense Lawyers

Ohio State Bar Association, Corporation Law Committee; Small Firms Section

Fairfield County Bar Association

Licking County Bar Association

Madison County Bar Association

Columbus Bar Association, Criminal Law Committee

Columbus Young Professional Club

Community Involvement

Fall 2021 Cohort, Columbus Impact Academy

Volunteer Attorney, Legal Aid Society of Columbus

Criminal Defense

Juvenile Law

  • Juvenile Criminal Defense
  • Representation of parents and children in Abuse Neglect and Dependency actions
  • Representation of parents in child support contempt
  • Juvenile Protection Orders

Family Law

Small Business Litigation

Business Formation

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