Gregory F. Ahrens

  • Partner
  • Executive Committee, Member

Gregory F. Ahrens is in his thirty-first year of practicing intellectual property law. His expertise is concentrated in intellectual property litigation, although he oversees others in all phases of the firm’s intellectual property practice, particularly in the chemical arts. In his litigation practice, Gregory has handled scores of cases, many through jury trials and appeals, in numerous federal courts across the country, including the Court of Appeals for the Federal Circuit, as well as in various state courts in Ohio. Greg is currently a member of the Executive Committee of Wood Herron & Evans, which manages the firm’s operations. Greg resides in Hyde Park with his wife and they have four children.

Areas of Practice

  • Chemicals/Materials Science
  • Litigation/Dispute Resolution
  • Patents
  • Trademarks
  • Post Grant Options

Bar Admissions

  • Ohio, 1987
  • Wisconsin, 1987
  • U.S. Patent and Trademark Office
  • U.S. Court of Appeals Federal Circuit
  • U.S. Court of Appeals 9th Circuit
  • U.S. Supreme Court


  • University of Wisconsin Law School, Madison, Wisconsin
    • J.D. – 1987
    • Law Journal: Wisconsin International Law Journal Managing Editor
  • University of Texas at Austin, Austin, Texas
    • Bachelor of Science – Chemical Engineering – 1983

Honors and Awards

  • Best Lawyers® Litigation - Patent ''Lawyer of the Year'' in Cincinnati, 2021
  • The Best Lawyers in America®, 2016 - 2021
  • Ohio Super Lawyers®, 2007 - 2020
  • Best Lawyers® Litigation - Patents ''Lawyer of the Year'' in Cincinnati, 2018
  • WHE Executive Committee Member
  • Past President of the Cincinnati/Northern Kentucky Chapter of the Federal Bar Association
  • President of the Board of Directors, Little Brothers Friends of the Elderly
  • Board of Trustees, Midwest Rugby Development Foundation

Professional Associations and Memberships

  • American Bar Association
  • Ohio State Bar Association
  • Cincinnati Bar Association
  • Wisconsin Bar Association
  • American Intellectual Property Law Association
  • Cincinnati Intellectual Property Law Association
  • Federal Bar Association, Cincinnati/Northern Kentucky Chapter, Past President and Executive Committee member
  • Federal Circuit Bar Association

Pro Bono Activities

  • Volunteer Lawyers for the Poor Foundation, 1990 to Present


  • Phi Alpha Delta