Robert P. Greenspoon

Flachsbart & Greenspoon, LLC
Contact: 312.551.9500
Law School: University of Michigan Law School - University of Michigan
Jurisdiction: Illinois


About Robert P. Greenspoon
I am a founding member of Flachsbart & Greenspoon, LLC. A registered patent attorney, I concentrate my practice in the litigation and trial of patent cases involving computer and electronic technologies. My cases have involved computer, computer network and electronic technologies of the highest complexity, but also simple mechanical devices.

I have successfully argued numerous cases before the Court of Appeals for the Federal Circuit, including IMS Technology, Inc. v. Haas Automation, Inc., 206 F.3d 1422, 1430 (Fed. Cir. 2000), HyperPhrase Technologies LLC v. Google, Inc. (Case No. 2007-1125), and 1st Technology v. Rational Enterprises (Case No. 2008-1132). I served in 1995-1996 as a judicial law clerk to the Honorable Brian Barnett Duff of the United States District Court for the Northern District of Illinois.

Our firm has filed friend-of-the-court briefs in the Supreme Court and the Court of Appeals for our clients, to advocate for their interests on issues of national importance.

Recent wins:

Won patent jury trial with co-counsel for automotive supplier Lear Corporation, jury verdict February 10, 2011.

Won inter-partes patent reexamination in the Patent and Trademark Office for patentee telecommunications vendor TeleCommunication Systems, Inc. in January 2011.

Litigation and trial of intellectual property cases -- patents, trademarks, copyrights, trade secrets, and related contract and business tort issues.
Directory Practice Areas
  • Intellectual Property
  • Patents
Jurisdictions Admitted to Practice
Registered Patent Attorney (United States Patent and Trademark Office)
Professional Experience
Member, Flachsbart & Greenspoon, LLC
Flachsbart & Greenspoon, LLC combines sound advice and planning with effective action, driven by our passion and skill. We prosecute and defend intellectual property matters throughout the United States. Our clients range from individual inventors to members of the Fortune 500.
Shareholder, Niro, Haller & Niro
Law Clerk to the Honorable Brian Barnett Duff, United States District Court, Northern District of Illinois
University of Michigan Law School - University of MichiganJ.D.Law
University of ChicagoB.A.Physics
Honors: Graduated with Honors
Professional Activities
Co-chair Lawyer Alumni of the College of the University of Chicago 2009-Current


Articles & Publications


Website: Website



Flachsbart & Greenspoon, LLC
333 North Michigan Avenue
27th Floor
Chicago, IL 60601
Telephone: 312.551.9500