Ko-Fang Chang

Kilpatrick Townsend & Stockton LLP 

Ko-Fang Chang counsels clients ranging from Fortune 500 companies to start-ups on strategic patent portfolio development, with emphasis on patent prosecution in electrical and computer- related technologies. He works closely with clients and leads teams of skilled attorneys in prosecuting patent applications in both the U.S. and foreign countries. He develops strategy to address key infringement and validity issues at various stages of licensing and litigation. In addition, he performs due diligence investigations, freedom-to-operate studies and non-infringement/invalidity opinions on behalf of clients.

Mr. Chang also serves as co-chair of the firm’s Patent Reexamination & Inter Partes Disputes Team. He has extensive experience handling ex parte and inter partes reexaminations. He has also filed one of the first petitions for initiating inter partes review before the Patent Trial and Appeal Board.

Prior to his legal career, Mr. Chang was an electrical engineer at ViaSat, Inc., where he designed hardware and software for satellite communication systems.

In 2011, the Silicon Valley/San Jose Business Journal honored Mr. Chang as one of Silicon Valley’s Top 40 Under 40. Mr. Chang was recognized for his outstanding legal practice and his contributions to the Asian Law Alliance, which provides legal services to low-income individuals in areas of domestic violence, employment, and housing in Santa Clara County.


  • Defended ViaSat in an inter partes review challenge of U.S. Patents No. 8,107,875; 8,068,827 and 8,010,043. We successfully countered the petitioner’s arguments for timely submission under 35 U.S.C. Section 315(b), resulting in PTAB decisions to deny IPR requests on all three patents. Petitioner’s requests for rehearing and expanded panel were also denied.
  • United States Patent and Trademark Office Patent Trial and Appeal Board Case Numbers IPR2014-00236, IPR2014-00239, and IPR2014-00240.
  • Represented Motorola Mobility in an inter partes review challenge of U.S. Patent No. 7,516,484 relating to a reader adapted for a portable computer. The Patent Trial and Appeal Board cancelled all claims challenged (as anticipated by prior act).
  • United States Patent and Trademark Office Patent Trial and Appeal Board Case Number IPR2013-00010.


  • University of California, Boalt Hall School of Law, J.D. (2000)
  • Rice University, M.E., Electrical Engineering (1995)
  • Rice University, B.S., Electrical Engineering (1994)


  • California

Court Admissions:

  • U.S. Patent and Trademark Office


Rate : $$$

What types of cases Attorney Ko-Fang Chang & Kilpatrick Townsend & Stockton LLP  can handle?
Kilpatrick Townsend & Stockton LLP  can handle cases related to laws concerning Litigation, Entertainment, Consumer Rights & Protection, Intellectual Property. We manually verify each attorney’s practice areas before approving their profiles and reviews on our website.
Where is Kilpatrick Townsend & Stockton LLP  located?
Kilpatrick Townsend & Stockton LLP  is located at 1080 Marsh Rd, Menlo Park, CA 94025, USA. You can reach out to Kilpatrick Townsend & Stockton LLP  using their phone line 650.324.6307. You can also check their website kilpatricktownsend.com or email them at [email protected].
How much would it cost to hire Kilpatrick Townsend & Stockton LLP ?
Ko-Fang Chang lawyer charges are specific to each case. However, they work with contingency fees and its ranges from $$ to $$$. They also provide free consultation [and no obligation quotes] if you are interested to hire.
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Kilpatrick Townsend & Stockton LLP 
1080 Marsh Rd, Menlo Park, CA 94025, USA
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