Allen is an associate in the intellectual property litigation group focused on patent matters and has represented clients in various technical fields, including mesh networks, semiconductor manufacturing, LEDs, displays, encryption technologies, video encoding/decoding, medical devices, and consumer electronics.

Allen has litigated patent cases in a number of jurisdictions, including federal district courts, the Court of Appeals for the Federal Circuit, and United States International Trade Commission. Allen is experienced at different stages of patent litigations in district courts and the ITC, including pre-suit investigations, pleadings, motion practice, discovery, claim construction, and expert reports. Allen also has significant experience participating in all phases of post-grant proceedings before the Patent and Trial Appeal Board (PTAB), from filing through final written decision. His experience in bringing inter partes review petitions includes drafting petitions, expert reports, reply briefs, and preparing the taking and defending of expert depositions.

Allen has advised companies on both offensive and defensive IP strategies. He has counseled companies preparing for licensing negotiations, and represented clients in mediation.

Prior to joining Ropes & Gray, Allen worked as a patent examiner at the United States Patent and Trademark Office (USPTO). At the USPTO, he examined patents relating to computer architecture.  Allen completed his Ph.D. in Electrical Engineering at the University of Rochester. His graduate studies work focused on optical characterization methods of solid state materials. Allen’s technical expertise spans fields including optics, electro-optic systems, wireless communications and network systems, semiconductor devices and fabrication, computer architecture, and digital signal processing. Allen’s post-graduate research at the University of Virginia involved the design and development of high-powered photo-diodes for the advancement of telecommunications.


  • Cellect, LLC v. Samsung Electronics (PTAB): Representing Samsung in challenging three patents related to reduced area camera assemblies.
  • Palo Alto Networks, Inc. v. Packet Intelligence LLC. (PTAB): Representing Palo Alto Networks in challenging patents in ongoing PTAB IPR trials relating to packet classification, switching and monitoring.
  • Ultravision Technologies, LLC v. Samsung Electronics (E.D. Tex., PTAB): Defending Samsung Electronics in a patent infringement action involving six patents related to LED displays.
  • Emerson Electric v. SIPCO et al.(N.D. Ga., PTAB, CAFC): Representing Emerson Electric in a 10-patent lawsuit, multiple inter partes review proceedings, and Federal Circuit appeals relating to mesh network technology.
  • Veeco Instruments Inc. v. SGL Carbon, LLC et al.,(E.D.N.Y. / Fed. Cir.): Represented Veeco in a two-patent infringement case related to removable wafer carriers used in the production of LEDs in Metal-Organic Chemical Vapor Deposition (MOCVD) systems. Member of a team that successfully obtained a preliminary injunction prohibiting SGL from supplying infringing wafer carriers to Veeco’s chief MOCVD competitor, after which the case settled while on appeal.
  • Represented VIZIO, Inc in three inter partes review proceedings challenging patents relating to LED technology at the PTAB.
  • Imperium IP Holdings (Cayman), Ltd. v. Samsung Electronics Co., Ltd. (E.D. Tex., PTAB, Fed. Cir.): Defended client as a technical advisor for one of three asserted patents during jury trial resulting in a jury finding the patent invalid, and in inter partes review proceeding related to same patent resulting in a finding of invalidity for all challenged claims.
  • In the Matter of Certain Non-Volatile Memory Devices and Products Containing Same (No. 337-TA-922): Represented Spansion LLC in an International Trade Commission Investigation against Macronix involving patents related to semiconductor memory devices.
  • In the Matter of Certain Television Sets, Television Receivers, Television Tuners, and Components Thereof (No. 337-TA-910): Represented a major multinational electronics company in an International Trade Commission Investigation relating to two patents directed to television tuners. Member of a team that successfully obtained summary determination of non-infringement for a design-around product.
  • In a pro bono matter, assisted in securing a name change and new birth certificate for a transgender youth victim to domestic violence.

Areas of Practice