Dang, Sang



U.C. Irvine (B.S., Computer Science, 1986)
Loyola of Los Angeles School of Law (Juris Doctor, 1998)


The State Bar of California
Admitted since 2001
State Bar No. 214558


United States Patent & Trademark Office
All State Courts of California (including Supreme Court of California)
United States District Court (Central)

Dang, Sang


Sang Dang is a Partner at Fortis LLP. Mr. Dang has successfully represented clients in large-scale intellectual property litigation matters, involving a diverse array of technologies, such as liquid crystal displays, computer peripheral devices, group collaboration software, scanning devices, memory, and core logic chipsets.

Being registered to practice before the U.S. Patent and Trademark Office, Mr. Dang has also prosecuted patents on behalf of Intel Corporation, Nortel Networks, Sun Microsystems, Siebel Systems, Silicon Engineering, and Maxim Semiconductor, among others, in a wide range of technologies including microprocessors, communication chips, communication devices, memory controllers, I/O controllers, and various video and audio based technologies. In addition, Mr. Dang has prepared numerous patent opinions providing infringement, validity, clearance, or design-around legal analysis.

His clients have also included Taiwanese companies, such as Quanta Computer Inc., AU Optronics, and Foxconn/Hon Hai. Recently in particular, Mr. Dang was a member of the litigation team representing Quanta in patent disputes against LG Electronics and Samsung. Quanta’s dispute against LG Electronics was eventually heard in the U.S. Supreme Court. It was the first time that the U.S. Supreme Court had heard a patent dispute against a Taiwanese company and resolved the dispute favorably for the Taiwanese company. This case was very well publicized in Taiwan. In 2012, Mr. Dang and his team successfully defended two foreign-based clients (Li-Tek and Dongguan Li Wang) against claims of copyright infringement and trade secrets misappropriation. Dongguan Li Wang is the Chinese factory of Li-Tek (a Taiwanese company). This particular case marks one of the few times IP claims against a Chinese company were successfully litigated and defended in a U.S. Federal Court.

Before becoming an attorney, Mr. Dang worked as a System Engineer at Xerox Corporation for nearly 13 years.

Mr. Dang received a Juris Doctor degree from Loyola of Los Angeles School of Law in 1998, and a Bachelor of Science degree in Computer Science from the University of California, Irvine in 1986. He is admitted to practice in California, all United States District Courts in California, and the United States Court of Appeals for the Federal Circuit. Mr. Dang reads, writes, and speaks fluent Vietnamese.

Representative Matters:

LG Electronics, Inc. vs. Quanta Computer Inc. (N.D. Cal.) (notebook computers and components)
Syscan, Inc. vs. Plustek Inc. (N.D. Cal.) (scanners)
ATEN International Co., Ltd. vs. Emine Technology Co., Ltd. (N.D. Cal) (KVM)
Sharp Corporation vs. AU Optronics Corporation (N.D. Cal.) (liquid crystal displays)
Samsung Electronics Co. Ltd. vs. Quanta Computer Inc. (N.D. Cal.) (notebook computers and components)
AU Optronics Corporation vs. Sharp Corporation (N.J.) (MPEG processors)
Sharp Corporation vs. AU Optronics Corporation (C.D. Cal.) (liquid crystal displays)
AU Optronics Corporation vs. Sharp Corporation (E.D. Texas) (optics)
Semiconductor Energy Laboratory vs. Acer Inc. (N.D. Cal.) (liquid crystal displays)
Syscan, Inc. vs. Portable Peripheral Co., Ltd. (N.D. Cal.) (scanners)
GTX Corporation vs. Kofax Image Products, Inc. (E.D. Texas) (image enhancement products)