Picture of Rex Hwang

Rex Hwang, a registered Patent Attorney in JMBM’s Litigation group, has significant experience litigating complex patent, trademark, copyright and trade secret disputes. Rex’s practice covers all aspects of intellectual property law, including intellectual property litigation, patent and trademark prosecution, licensing negotiation, AIA proceedings such as IPRs, CBMs and PGRs, and counseling relating to intellectual property procurement and development.

Rex has handled matters covering a wide range of technologies and products including mobile communication devices, flash memory devices, LED lights, semiconductors, medical devices, consumer chemical products, and computer hardware and software.

Rex has represented both large and small companies including LG, VIZIO, British Broadcasting Corp., SHFL entertainment, Bally Gaming, BEA Systems, Inc., Oracle, Fuji Xerox, and others.

Rex has served as litigation counsel in a variety of intellectual property litigation matters at the federal district court and appellate court levels, and before the United States Patent and Trademark Office in both interference and post-grant review proceedings.

While in law school, Rex was the managing editor of the Kansas Journal of Public Policy and was selected to participate regionally in the Saul Lefkowitz Moot Court Competition. He is admitted to the United States Supreme Court, the United States Court of Appeals for the Federal Circuit, U.S. District Courts for the Central, Northern and Southern districts of California, and permanently admitted to practice in U.S. District Courts for the Eastern District of Texas and Northern District of Illinois. Rex is also registered to practice before the U.S. Patent and Trademark Office.

Rex is also an active member of both the legal and local community. He is a member of the Los Angeles Korean American Bar Association (Board member), and the KU Alumni Association (Big 12 LA Liaison). Rex also pens the “Federal Circuit Report” column in New Matter, which is the official publication of the Intellectual Property Section for the State Bar of California. Rex also coaches his sons' little league baseball teams.

Representative Matters

  • Represented defendant VIZIO in a patent infringement lawsuit involving five patents relating to digital rights management, cryptography, steganography, and digital watermarking technologies resulting in favorable settlement for VIZIO.  Secured two sanction awards against the plaintiff for $65,345 during the lawsuit.  Final settlement required the plaintiff to pay VIZIO $100,000 as an initial payment, and an addition $650,000 in contingent payments.
  • Won summary judgment of non-infringement for defendant VIZIO in a patent infringement lawsuit involving de-interlacing and multimedia encoding system technologies.
  • Represented a university-based licensing entity in a patent litigation over FinFET semiconductor technology. Member of trial team that secured a $400 million jury verdict. The jury found the claims to be valid and that all the defendants infringed the asserted patent. Successfully handled related IPR matters.
  • Secured partial summary judgment for plaintiffs British Broadcasting Corporation and affiliated entities in two lawsuits involving trademark infringement and dilution claims, which led to the matter being resolved with a Consent Judgment and Permanent Injunction against defendants.
  • Secured partial summary judgment on behalf of Conan O’Brien, TBS, and related entities, finding no infringement of certain copyright infringement claims.
  • Secured partial summary judgment for defendant VIZIO in a trademark infringement and dilution matter, which led to plaintiff dropping its damages claim.
  • Won summary judgment of non-infringement on behalf of manufacturer of outdoor activity equipment, which involved three patents directed to clip-lights.
  • Represented LG Electronics in patent infringement lawsuit involving microprocessor technology resulting in favorable settlement for client.
  • Successfully handled appeal before the United States Court of Appeals for the Federal Circuit where district court’s patent invalidity determination of three utility lighter patents was affirmed.
  • Represented owner of patents directed to mobile network technology against major computer manufacturers resulting in favorable settlements after Markman hearing.
  • Successfully invalidated patent claims involving flash memory technology as lacking written description support in a patent interference action before the Board of Patent Appeals and Interferences.
  • Represented nail polish distributor in litigation involving lacquer composition patent resulting in favorable settlement for client.
  • Represented major distributor of various seafood products in trademark infringement litigation resulting in favorable settlement for client.
  • Successfully obtained summary judgment invalidating five design patents covering and dismissing related trade dress claims for automobile parts, directly leading to a consent judgment invalidating two additional patents and a six figure award of damages for client’s counterclaim.
  • Represented major electronics manufacturer of mobile devices in various patent licensing negotiations involving digital image processing, digital music player, mobile telecommunications and Internet protocol television technologies.


J.D., University of Kansas School of Law

B.S., Chemical Engineering, University of Kansas

Bar Admissions State Bar of California
U.S. Supreme Court
U.S. Court of Appeals, Federal Circuit
U.S. District Court, Northern District of California
U.S. District Court, Central District of California
U.S. District Court, Southern District of California
U.S. District Court, Eastern District of Texas
U.S. District Court, Northern District of Illinois
U.S. Patent and Trademark Office
U.S. Court of Appeals, Ninth Circuit

Korean American Bar Association (Board member)

NAAAP-LA (former Board member)

Los Angeles Intellectual Property Association

KU Alumni Association, Big 12 LA Liaison