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Andrew Heinisch is an efficient, hands-on attorney who enjoys working closely with clients to find creative answers to complex problems. He is a shareholder in Reinhart’s Intellectual Property Practice and a registered patent attorney.

Andrew’s wide range of technological experiences and engineering background make him an especially effective adviser for clients with highly technical innovations. He works closely with a variety of U.S. and foreign corporate clients, from large, publicly traded companies to small, closely held businesses. Andrew understands his clients’ business needs and deals with every aspect of patent work, including application drafting and prosecution, intellectual property due diligence, validity and infringement opinions and licensing. Andrew also has performed and supervises a full range of trademark services, including clearance, prosecution and international enforcement.

Andrew’s legal experiences run deep, including regularly litigating patent, trademark/trade dress and copyright lawsuits, and in handling various adversarial post grant proceedings (Inter Partes reexaminations, Inter Partes reviews and Interference Proceedings) before the U.S. Patent and Trademark Office. Andrew has also been involved with similar adversarial patent and trademark proceedings in many foreign countries. His practical approach to each project aligns his clients’ business goals and cost parameters to get results.

He is also a member of Reinhart’s Artificial Intelligence (AI) Team and can advise clients on the technical and regulatory requirements, challenges and opportunities of AI technology.

Andrew is an experienced presenter and lecturer and previously appeared on Legally Speaking, an educational television program, discussing patent, trademark and copyright issues. He had periodically taught a continuing legal education clinic on intellectual property topics for business attorneys. He is also a veteran, having served with the Army National Guard for more than seven years.

Andrew is experienced in a wide range of technologies, including:

  • Fluid Filters & Filtration Systems
  • Various Automated Machines
  • Nanofibers & Polymer Electrospinning
  • Hydraulic & Pneumatic Systems & Controls
  • Agricultural & Construction Equipment
  • Retail Shelving Display Solutions
  • Compressors & Refrigeration Systems
  • Linear Bearings

Outside of the office, Andrew enjoys hiking, various sporting activities and all things active and outdoors, including forestry activities.


  • J.D., University of Illinois College of Law
  • B.S.A.E., University of Illinois (Agricultural Engineering)

Bar Admissions

Illinois | Wisconsin

Court Admissions

  • U.S. Patent and Trademark Office
  • U.S. District Court, Northern District of Illinois
  • U.S. District Court, Central of District Illinois
  • U.S. Court of Appeals, Seventh Circuit
  • U.S. Court of Appeals, Federal Circuit


  • Developing a comprehensive patenting strategy with engineering teams and preparing 15 new patent applications to cover different aspects and technological developments of a new product launch
  • Evaluating third-party patent portfolios and developing design alternatives with engineering design teams and foreign counsel to minimize patent infringement risks U.S. and worldwide
  • Directing trademark enforcement and trademark invalidity proceedings against a client’s former distributor in foreign countries

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