Photo of Simeon G. PapacostasPhoto of Simeon G. Papacostas

Simeon G. Papacostas

Partner

Education

Washington University School of Law, J.D.
  • cum laude; Dean's List
  • Washington University Law Review, Staff Editor
Yale University, B.S.
  • Biomedical Engineering

Prior Employment

  • Kirkland & Ellis LLP, Partner, 2014-2017; Associate, 2008-2014
  • U.S. House of Representatives, Legal Fellow, House Subcommittee on Courts, the Internet and Intellectual Property, 2008
  • Forest Pharmaceuticals, 2003-2005

Bar Admissions

Court Admissions

Languages

  • Greek

Professional Affiliations

DuPage County Bar Association, IP Chapter, Chair, 2017

Hellenic Bar Association, Scholarship Committee Member

Overview
Experience
Community
News & Resources

Overview

Simeon Papacostas is an intellectual property attorney with substantial litigation experience in federal courts. He primarily focuses his practice on patent litigation in federal courts and post-grant proceedings before the patent office. He has experience with patent-related antitrust issues, trademark litigation, counseling, and proceedings before the U.S. Patent and Trademark Office and general intellectual property due diligence and counseling, including both domestic and international intellectual property matters. Simeon has argued matters in federal district court and before the Court of Appeals for the Federal Circuit and has represented clients in bench and jury trials as well as arbitrations in federal courts. He has represented clients across a wide range of industries, including medical device manufacturing, pharmaceutical, biotechnology, drilling and oilfield services, computer hardware and software, consumer products, video game development, and military contracting.

Simeon is also active in pro bono work and has represented clients in matters involving international human rights, immigration law, animal rights, and various trademark and copyright issues.

Experience

  • Represented major pharmaceutical company in action brought against the USPTO under the Administrative Procedure Act regarding the proper calculation of patent term adjustment for client’s patent, arguing at both the district court and Federal Circuit; obtained the withdrawal of a holding of abandonment.
  • Represented major oilfield services company in its assertion of patents relating to marine seismic exploration technology against two major competitors; obtained summary judgment defeating counterclaims for inventorship, antitrust violations and unfair competition, and non-infringement of one defendant’s counterclaim as well as summary judgment of infringement of one of client’s patents. At trial in the Southern District of Texas, the team obtained a $105.9 million jury verdict and a finding by the jury that all four of client’s patents were valid and willfully infringed.
  • Represented bus converter manufacturer in bench trial in the Eastern District of Texas
  • Represented major biofuels manufacturer in multiple patent infringement litigations involving biobutanol technology
  • Represented medical device manufacturer in patent infringement litigation involving hernia repair, chest wall reconstruction, and surgical wound repair devices
  • Represented medical device manufacturer in patent infringement litigation involving laparascopic surgery port-site closure technology
  • Represented medical device manufacturer in patent infringement litigation involving the engineering design and drug elution of cardiovascular stents

Community

Naperville Jaycees, Member

Pro Bono

  • As pro bono of counsel to the International Association of Lawyers (“Union Internationale des Avocats”), filed amicus brief in human rights matter before the Inter-American Commission on Human Rights on the importance of maintaining an independent judiciary.
  • Advised various small businesses and individuals on a pro bono basis on trademark and copyright matters.