Nathan S. Mammen - Partner

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Nathan S. Mammen

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Washington, D.C.
Phone: +1 202-879-5949
Fax: +1 202-654-9511
Overview News

Professional Profile

Nathan Mammen is a litigation partner in Kirkland's Washington, D.C. office. Nathan's practice focuses on intellectual property and general appellate litigation. He has briefed and argued cases in state and federal appellate courts.

Prior to joining Kirkland, Nathan was a law clerk to Chief Judge Karen J. Williams, U.S. Court of Appeals for the Fourth Circuit. Nathan was called to active duty and deployed to Kuwait in 2012-2013 as a military prosecutor.

Representative Matters

Intellectual Property

  • Neology, Inc. v. Kapsch TrafficCom IVHS, Inc. (ITC. D. Del. & PTAB) – representing Kapsch TrafficCom in a multi-jurisdiction patent infringement action and inter partes review concerning patents involving RFID technology.

  • Represented major electronics manufacturer in international arbitration concerning valuation of a license to a portfolio of thousands of patents.

  • Element Six U.S. Corporation v Schlumberger Technology Corp. (S.D. Tex. 2014) – represented Schlumberger in declaratory judgment action involving twelve of client’s patents; obtained dismissal of case.

  • In the Matter of Certain Wireless Communications Equipment, Inv. No. 337-TA-866 (ITC) (2013) – represented Samsung in ITC investigation concerning wireless communication technologies.

  • OSRAM Sylvania, Inc. v. American Induction Technologies, Inc. (Fed. Cir. 2012) – Represented Plaintiff-Appellant in a successful appeal at Federal Circuit; obtained reversal of district court summary judgment ruling invalidating patent.

  • Bard Peripheral Vascular v. W.L. Gore (Fed. Cir. 2012), cert denied 133 S. Ct. 932 (2013) – Represented Plaintiff-Appellee in an appeal to the Federal Circuit defending a jury verdict of willful infringement, including a nine-figure damages verdict and an ongoing royalty award.

  • SLR Partners v. B. Braun Medical, Inc. (Fed. Cir. 2010) (S.D. Cal. 2009) – Represented B. Braun Medical in company-threatening patent infringement action, successfully defeating attempts to preclude Braun from marketing its innovative IV catheter and medical connector products. 

  • In re Spansion (D. Del. 2010) – Represented a client in a successful appeal of a bankruptcy court decision erroneously finding that Spansion's rejection of the client's intellectual property license left the client without rights under 11 U.S.C. § 365(n).

  • Board of Regents v. BASF Corp. (D. Neb. 2007-2008) – Defended BASF Corporation in an action concerning ownership of technologies related to genetically modified crops.

  • Represented major defense contractor in international arbitration with foreign competitor concerning intellectual property rights to sensitive defense technology.

General Litigation

  • Disability Rights New Jersey, Inc. v. Commissioner, New Jersey Department of Human Services (3d Cir. 2014) – Represented N.J. protection and advocacy system for persons with disabilities in landmark appeal involving American with Disabilities Act and Due Process challenges to a New Jersey policy for forcible medication of involuntarily committed patients in state hospitals; argued appeal.

  • United States v. Mason (4th Cir. 2014) – Represented federal habeas petitioner; argued appeal.

  • Robertson v. Shinseki (Fed. Cir. 2013) – Represented veteran in an appeal concerning a Presidential Pardon; argued appeal.

  • Heino v. Shinseki (Fed. Cir. 2012) – Represented veteran in challenge to VA regulation concerning medication copayments; argued appeal.

  • Guerra v. Shinseki (Supreme Court 2012) – Represented several veterans services organizations in filing amicus brief in support of a petition for writ of certiorari.

  • Lambert v. Johnson (4th Cir. 2010) – Represented federal habeas petitioner; obtained reversal of the district court decision denying client federal habeas relief; represented client in state-court appellate proceedings.

  • Ruelas v. Wolfenbarger (6th Cir. 2009) – Represented federal habeas petitioner; argued appeal.

  • Kennedy v. Louisiana (Supreme Court 2008) – Represented Missouri Governor Matt Blunt and numerous members of the Missouri General Assembly in filing amicus brief.

Prior Experience

Patent Examiner, U.S. Patent and Trademark Office, 1999-2005

Intern, Office of the House Majority Whip Roy Blunt, 2003


Supreme Court of the United States

United States Courts of Appeals for the Second, Third, Fourth, Sixth, Seventh, Ninth, District of Columbia, and Federal Circuits

United States District Court for the Eastern District of Virginia

United States Court of Appeals for the Armed Forces

Army Court of Criminal Appeals

© 2017 Kirkland & Ellis LLP