Robert Philip Greenspoon

I am a registered patent attorney, and concentrate my practice in the litigation, trial and appeal of patent and other complex cases.

Rare among lawyers, my practice spans the entire breadth of patent acquisition and litigation. I work with inventors to file new patent applications, defend those inventions in all types of Patent Office proceedings (including PTAB challenges), try patent cases in the courts, argue for appellants and appellees in patent appeals at the United States Court of Appeals for the Federal Circuit, and bring and defend patent proceedings in the United States Supreme Court.

I argued the winning appeals in Petro Mex v. United States (Fed. Cir. 2024) (App. No. 23-1848); ADASA. v. Avery Dennison, 55 F.4th 900 (Fed. Cir. 2022); Zaxcom v. Lectrosonics (Fed. Cir. 2022) (App. Nos. 2020-1405, -1943, -1944); Tumey v. Mycroft AI, 27 F.4th 657 (8th Cir. 2022); 3M Company v. Evergreen Adhesives (Fed. Cir. 2021) (App. No. 20-1738); Opticurrent v. Power Integrations (Fed. Cir. 2020) (App. No. 19-2141); D’Agostino v. MasterCard Int’l, 844 F.3d 945 (Fed. Cir. 2016); Medtronic v. LifePort Sciences (Fed. Cir. 2016) (App. No. 15-1862); Computer Software Protection v. Adobe Systems (Fed. Cir. 2016) (App. No. 15-1608); Zayed v. Associated Bank, 779 F.3d 727 (8th Cir. 2015); 1st Media v. Electronic Arts, 694 F.3d 1367 (Fed. Cir. 2012); HyperPhrase v. Google (Fed. Cir. 2007) (App. No. 2007-1125); 1st Technology v. Bodog (Fed. Cir. 2008) (App. No. 2008-1132); and IMS Technology v. Haas Automation, 206 F.3d 1422 (Fed. Cir. 2000).

I also served as a judicial law clerk to the Honorable Brian Barnett Duff of the United States District Court for the Northern District of Illinois. I have authored or co-authored numerous articles for legal publications on patent policy. I also regularly contribute to the IPWatchdog blog to write on patent policy.

I am the inventor of U.S. Patent Nos. 9,986,794 and 9,320,326 (now owned by BibBoards, Inc.).