Gunnar G. Leinberg

Gunnar G. Leinberg

Registered Patent Attorney

Rochester, NY
Phone: 585.270.2103    Fax: 585.270.2179

Gunnar G. Leinberg is a partner and registered patent attorney, primarily focusing on the software, electrical, optical and mechanical arts. Resident in the Rochester office of Pepper Hamilton LLP, Mr. Leinberg assists clients, from startups to Fortune 500 companies, with the strategic procurement, management and monetization or defense of their intellectual property assets. In particular, he helps clients develop and implement IP procurement, risk management and enforcement or defense strategies that align with their business objectives.

Mr. Leinberg works extensively in the software service industry space, successfully assisting clients with navigating the rapidly changing software patenting landscape. His software service industry experience includes work with network traffic management, cloud data services and data management, enterprise management, fintech and insurance technologies, artificial intelligence, internet of things (IoT) and industrial internet of things (IIoT), imaging technologies including positioning and medical imaging, 3d printing, internet and electronic commerce, business methods, blockchain technology, computer hardware, and other software generally. Additionally, he assists clients in other technology areas, including communications technologies, electrical circuits, semiconductor technologies, refractive and reflective optics, optical detectors, optical communications equipment, laser-related technologies, LED, OLED and other display technologies, energy-related technologies, medical devices and equipment, robotics, electromechanical devices, MEMS devices, microfluidics, and other mechanical disciplines.

Mr. Leinberg is regularly involved with overseeing the development and management of patent portfolios for clients, as well as with post-grant administrative proceedings, such as post-grant review of covered business methods, ex parte reexaminations, inter partes reviews, post-grant opposition practice, reissues, and supplemental examinations. He also counsels and assists clients with noninfringement and invalidity property opinions, IP due diligence and IP licensing matters. Mr. Leinberg has substantial experience in assisting clients with IP litigation matters, including strategies with suits involving nonpracticing entities.

Mr. Leinberg is a frequent speaker on topics such as recent changes in patent practice and procedure; the strategic procurement, management and monetization or defense of patents, trademarks and copyrights; IP risk management; software patent eligibility; and IP licensing matters.

Before joining Pepper, Mr. Leinberg was a member of another national law firm.


  • J.D., Georgetown University Law Center, 1990
  • B.S., Electrical Engineering, summa cum laude, Syracuse University

Bar Admissions

  • New York
  • Massachusetts
  • District of Columbia
  • U.S. Patent and Trademark Office

Practice Areas

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