Photo of Eric J. SosenkoPhoto of Eric J. Sosenko

Eric J. Sosenko



West Virginia University College of Law, J.D.
West Virginia University, B.S.
  • Mechanical Engineering

Prior Employment

  • Brinks Gilson & Lione, Shareholder, 2005-2015; Counsel, 2001-2004
  • Harness, Dickey and Pierce, Principal, 1996-2001; Associate, 1989-1996

Bar Admissions

Court Admissions

Professional Affiliations

American Intellectual Property Law Association

  • Patent Law Committee
  • Patent Cooperation Treaty Issues Committee

Michigan Intellectual Property Law Association

State Bar of Michigan

  • Intellectual Property Law Section, Secretary/Treasurer
  • Arts, Communications, Entertainment & Sports Section

Washtenaw County Bar Association

  • Intellectual Property Law Section
    • Co-chairperson 1995-1996 and 2000-2001
News & Resources


Eric Sosenko is an intellectual property attorney with more than 25 years of experience focusing his practice on patent and trademark procurement, product and mark clearance, and related transactions. He has a vast understanding of U.S. and foreign patent and trademark law, including extensive experience in international protection under multinational treaties.

  • Represents large domestic and foreign companies, as well as local start-ups and second-stage companies in a wide variety of technical fields, including mechanical, electromechanical, medical, and material arts
  • Counsels clients on the strategic implementation and management of domestic and international intellectual property portfolios
  • Drafts and prosecutes patents in a variety of technical areas, including automotive technology; compressors, evaporators, and related systems; manufacturing, molding, and packaging machinery; consumer products; sporting goods; plastic containers; medical devices; glazing technology processes; plasma coating; injection molding (plastics and semi-solid metals) and blow molding; and fluid handling
  • Renders freedom-to-operate, noninfringement, and validity opinions of varying analytical depth and complexity
  • Prepares guidance and risk assessment in connection with design around strategies to avoid infringement
  • Counsels clients on trademark selection and branding for new products and services


  • Defended Shanghai Xing Te Hao in suit for infringement of plaintiff's hand tool patent; Black & Decker Inc., et al. v Shanghai Xing Te Hao Industrial Co. Ltd., et al., Case No. 02 C 4615 (N.D. Ill.)
  • Settled action against Sidel for infringement of patent on logic-controlled plastic molding machine; Milacron Inc. v. Sidel S.A., et al., Civil Action No. 01-71888 (E.D. Mich.)
  • Defended Uniloy Milacron in suit for infringement of plaintiff's patent for blow molding machine equipment; Sidel v. Uniloy Milacron Inc., et al., 61 USPQ2d 1480 (N.D. Ga., 2001)
  • Settled action against Asian Metals for infringement of patent on particulate feedstock for semi-solid metal injection molding; Thixomat Incorporated v. Asian Metals and Alloys Corp., Civil Action: 01C 0486 C (W.D. Wisc.)


Odyssey of the Mind

  • Coach, 2001-2005

Fairland Subdivision Association

  • Treasurer, 2013-2015

Cub Scouts of America

  • Cub Master, 2010-2011
  • Den Leader, 2007-2011

Ann Arbor Chamber of Commerce

  • Morning Edition Planning Committee, 2005-2007
    • Program Chair, 2007

Leadership Ann Arbor, 2004-2005

News & Resources


Seminars & Events


  • The Best Lawyers in America, 2010-2020
    • Recognized in practice areas of:
      • Litigation - Intellectual Property
      • Patent Law
      • Trademark Law 
    • Ann Arbor Litigation - Intellectual Property "Lawyer of the Year," 2019
    • Ann Arbor Patent Law "Lawyer of the Year," 2015 and 2017
  • Leading Lawyers Magazine Michigan, 2017
    • Recognized in practice areas of:
      • Copyright & Trademark Law
      • Intellectual Property Law
      • International Business & Trade Law
      • Patent Law
  • DBusiness, Top Lawyers, 2014, 2015, and 2017
  • Managing Intellectual Property, Recognized as an IP Star, 2013-2020
  • Michigan Super Lawyers, 2006-2011