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Finnegan, Henderson, Farabow, Garrett & Dunner LLP

271 17TH STREET, NW, SUITE 1400, ATLANTA, GA 30363-6209, USA
Work +1 404 653 6400
Fax +1 404 653 6444
Atlanta, Boston, London, Palo Alto, Reston, Seoul and 4 more

Jason E. Stach

Work +1 404 653 6428
Finnegan, Henderson, Farabow, Garrett & Dunner LLP

Work Department

Intellectual Property


Leader, PTAB Trials Practice


Jason Stach leads Finnegan’s PTAB trials practice. He has extensive experience in several areas, including challenging and defending patents in post-grant proceedings at the U.S. Patent and Trademark Office (USPTO), litigating in district courts and at the U.S. International Trade Commission (ITC), representing clients in appeals before the U.S. Court of Appeals for the Federal Circuit, managing worldwide patent portfolios, and counseling clients on due diligence and freedom-to-operate issues. Jason handles cases involving many different technologies, including electrical, computer, software, chemical, pharmaceutical, medical device, and mechanical technologies.


  • Atlanta Intellectual Property American Inn of Court
    (Treasurer, 2018-present; Executive Committee Member, 2014-present; Communications chair, 2016-2018; Programs co-chair, 2014-2016)
  • PTAB Bar Association
    (Board of Directors, 2018-present; PTAB Trials Committee chair, 2016-present)
  • American Intellectual Property Law Association Member
  • State Bar of Georgia
    (Intellectual Property Section)


Emory University School of Law
J.D., with honors, 2003
Purdue University
B.S., Industrial Engineering, with distinction, 2000

United States: Intellectual property

Patent: prosecution (including reexamination and post-grant proceedings)

Within: Next generation lawyers

Jason Stach - Finnegan, Henderson, Farabow, Garrett & Dunner LLP

Within: Patent: prosecution (including reexamination and post-grant proceedings)

Finnegan, Henderson, Farabow, Garrett & Dunner LLP‘s ‘very knowledgeable’ team fields a very active PTAB practice - the main focus of Reston’s Erika Harmon Arner and Atlanta’s Jason Stach - with a strong track record in covered business method reviews, post-grant reviews and inter partes reviews (IPR); the group is also exceedingly well versed in patent applications and portfolio strategy development, with experience including utility, plant and design patents and its large sectorial breadth renders possible a varied caseload that recently included strategic patent counselling for Vertex Pharmaceuticals regarding cystic fibrosis products. Washington DC-based managing partner Mark Sweet led advice for NanoFlex Power on its worldwide patent portfolio in relation to application drafting work and due diligence work regarding competitors, while Elizabeth Ferrill and Gregory Gramenopoulos, both also in Washington DC, assisted Google with design patent application preparation and counselling matters regarding graphical user interfaces and icons. Arkema engaged the team, here led by Sweet, Mark Feldstein and Brian Kacedon, for a representation in a post-grant review before the PTAB, challenging a Honeywell patent regarding automobile air conditioning chemicals. Other clients include AstraZeneca, Caterpillar and Toyota. Elliot Cook in Reston, Li Feng, Joshua Goldberg and Erin Sommers in Washington DC made partner and former Lead Administrative Patent Judge at the United States Patent and Trademark Office (USPTO) Trenton Ward joined the Atlanta office.

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