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Robert Greenspoon is a Partner at Dunlap Bennett & Ludwig. He is a registered patent attorney who concentrates his practice in the litigation, trial, and appeal of patent and other complex cases. Rare among lawyers, his practice spans every aspect of the patent field. Robert works with inventors to file new patent applications, defends those inventions in all types of Patent Office proceedings (including PTAB challenges), tries patent cases in the courts, argues for appellants and appellees in patent appeals at the United States Court of Appeals for the Federal Circuit, and brings and defends patent proceedings at the United States Supreme Court.


  • Robert argued the winning appeals in 3M Company v. Evergreen Adhesives, Inc. (Federal Circuit Appeal No. 20-1738)
  • Opticurrent, LLC v. Power Integrations, Inc. (Federal Circuit, Appeal No. 19-2141, 2020)
  • D’Agostino v. MasterCard Int’l Inc., 844 F.3d 945 (Fed. Cir. 2016)
  • Medtronic v. LifePort Sciences (Federal Circuit, Appeal No. 15-1862, 2016)
  • Computer Software Protection v. Adobe Systems, Inc. (Federal Circuit, Appeal No. 15-1608, 2016)
  • Zayed v. Associated Bank, 779 F.3d 727 (8th Cir. 2015)
  • 1st Media, LLC v. Electronic Arts, Inc., et. al., 694 F.3d 1367 (Fed. Cir. 2012)
  • HyperPhrase v. Google (Federal Circuit, Appeal No. 07-1125, 2007)
  • 1st Technology v. Bodog (Federal Circuit, Appeal No. 08-1132, 2008)
  • IMS Technology, Inc. v. Haas Automation, Inc., 206 F.3d 1422 (Fed. Cir. 2000).


  • National Law Journal Trailblazer, Intellectual Property (2017)
  • IAM Strategy 300 (2016-2018)
  • Illinois Super Lawyer — Intellectual Property Litigation (2013-2022)
  • Martindale-Hubbell rated AV-Preeminent”


  • A.B., Physics and the History and Philosophy of Science, University of Chicago
  • J.D., University of Michigan


  • Illinois
  • Supreme Court of the United States
  • Federal, Fourth, Fifth, Seventh, Eighth, and Ninth Circuits
  • United States District Courts for the Northern District of Illinois
  • United States District Courts for the District of Arizona
  • United States District Courts for the Eastern District of Michigan
  • United States District Courts for the District of Connecticut
  • United States District Courts for the Eastern District of Wisconsin
  • United States District Courts for the Western District of Wisconsin
  • United States District Courts for the Western District of New York
  • United States Patent and Trademark Office

Intern Program

As part of our effort to recruit, develop and retail the best and brightest attorneys, Dunlap Bennett & Ludwig offers a summer intern program for promising law school students who are looking to work as part of an innovative and incredibly successful team. With a global team of lawyers, selected candidates are able to work on high level projects in a collaborative space.

Paralegals and Legal Support Staff

At Dunlap Bennett & Ludwig, our team of paralegals and staff work together collaboratively along side our attorneys toward a common goal. We have created a positive work environment where our paralegals and legal assistants work to successfully reach firm-wide goals and support each other to combine individual strengths to enhance team performance. They regularly assist our attorneys with organizing and maintaining files, conducting legal research, and preparing documents.