Bret A. Hrivnak

Partner 216.274.2255


As a partner in the Cleveland office of Hahn Loeser, Bret counsels clients on the protection of U.S. and international intellectual property, including patents, trademarks, copyrights, trade secrets and domain names.                                                     

At Hahn Loeser

In his work as a patent and trademark attorney, Bret manages worldwide intellectual property portfolios and develops global strategies for intellectual property protection. When necessary, he prosecutes and defends disputes relating to intellectual property and arising under state, federal and international laws, including proceedings before the Board of Patent Appeals and Interferences, the Trademark Trial and Appeal Board and the World Intellectual Property Organization.

In addition, his representation includes preparing and reviewing agreements including licenses, assignments, joint ventures and development agreements, supply agreements, mergers/acquisitions and other intellectual property transactions. Bret also addresses antitrust issues that may arise in such transactions or during the course of his clients’ business activities.          



University of Akron School of Law, J.D., 2004. Certificate in intellectual property law


University of Akron, M.S., mechanical engineering, 2001. Published thesis: Influence of Notch Severity on Impact Toughness and Fracture; Behavior of Three Aluminum Alloys


University of Akron, B.S., mechanical engineering, 1994

Memberships & Affiliations

Institute for Creative Leadership: member, board of trustees


Scanlon-Bell American Inn of Court: member


IP Law Section, Ohio State Bar Association: vice chair; CLE program director


American Intellectual Property Law Association: member


Cleveland Intellectual Property Association: member


Licensing Executives Society (LES): past member


Scanlon Inn of Courts: past member

Bar Admissions

Admitted to the Ohio Bar, 2004


Licensed to practice before the U.S. District Court, Northern District of Ohio; Ohio U.S. Court of Appeals for the Federal Circuit: United States Patent and Trademark Office

Awards & Distinctions

“Ohio Rising Stars,” Ohio Super Lawyers, 2010, 2014