Pier DeRoo

Finnegan Henderson Farabow Garrett & Dunner LLP

Pier D. DeRoo has broad experience in strategic client counseling and patent litigation before U.S. district courts and the Patent Trial and Appeal Board (PTAB) of the U.S. Patent and Trademark Office (USPTO).

He has handled every stage of litigation, including pre-litigation investigations, discovery, dispositive motions, and trial. Pier has represented parties in dozens of proceedings before the PTAB, including as lead arguing counsel.

His experience includes inter partes review (IPR), interference, reexamination, and ex parte prosecution appeal proceedings across a range of technologies, including monoclonal antibody pharmaceuticals and other biologics, small-molecule drugs, solid-state materials for renewable energy devices, collaboration software, and internet security.

Pier has also represented pharmaceutical and chemical clients in a variety of litigation venues, including U.S. district courts, the Federal Circuit, arbitration, and the U.S. International Trade Commission (ITC). His litigation experience includes managing pre-suit investigations, conducting all stages of fact and expert discovery, acting as lead drafter of dispositive motions, and trial representation.

Pier particularly enjoys counseling innovative and growing clients on a diverse array of patent matters. He has prepared numerous validity, infringement, and freedom-to-operate opinions for clients in the life science and chemical fields, drawing on his extensive litigation background. He also has significant experience managing patent portfolios and providing strategic prosecution guidance in the chemical and electrical arts.

A substantial portion of Pier’s time is devoted to pro bono matters. He has represented disabled clients in several federal appeals, including as lead and backup counsel on amicus briefs before the Federal Circuit and the U.S. Supreme Court.

Education :

  • University of Michigan Law School J.D., with honors, 2011
  • Princeton University A.B., Chemistry, with honors, 2006

Admissions :

  • California
  • District of Columbia
  • Maryland
  • U.S. Court of Appeals, Federal Circuit
  • Supreme Court of the United States
  • U.S. Patent and Trademark Office

Professional Activities :

  • American Intellectual Property Law Association (San Francisco Bay Area networking leadership, New Lawyers Committee, 2017-present; Washington DC networking leadership, New Lawyers Committee, 2012-2015)
  • American Bar Association
  • Federal Circuit Bar Association


Rate : $$$

What types of cases Attorney Pier DeRoo & Finnegan Henderson Farabow Garrett & Dunner LLP can handle?
Finnegan Henderson Farabow Garrett & Dunner LLP can handle cases related to laws concerning Litigation. We manually verify each attorney’s practice areas before approving their profiles and reviews on our website.
Where is Finnegan Henderson Farabow Garrett & Dunner LLP located?
Finnegan Henderson Farabow Garrett & Dunner LLP is located at 901 New York Avenue, Washington, DC 20268, USA. You can reach out to Finnegan Henderson Farabow Garrett & Dunner LLP using their phone line 202 408 4418. You can also check their website finnegan.com or email them at [email protected].
How much would it cost to hire Finnegan Henderson Farabow Garrett & Dunner LLP?
Pier DeRoo lawyer charges are specific to each case. However, they work with contingency fees and its ranges from $$ to $$$. They also provide free consultation [and no obligation quotes] if you are interested to hire.
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Finnegan Henderson Farabow Garrett & Dunner LLP
Washington 20268 DC US
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