skip to main content
Experience List
  • Email Page
  • Create PDF
  • Print Page

Admitted to Practice

  • U.S. Patent and Trademark Office, 1988


  • Chinese (Cantonese)
  • Chinese (Mandarin)

Philip Yau, Ph.D.

Patent Agent
Philip Yau has extensive experience preparing and prosecuting patent applications as well as providing support in a number of litigation and due diligence cases, including those involving holograms, medical devices, semiconductor memories, computer interfaces, software and modem technologies. Phil's technological experience includes semiconductors, flash memories, telecommunications, optics, holograms, superconductivity, data encryption and compression, software, Web and Internet applications, packet switching telephony, wireless communications, audio systems and medical devices.

Philip's clients include: Columbia Data Products, Catheffects, Sagetech Corp., SanDisk Corp. and Voxeo Corp.

Representative Experience

Patent portfolio management for Voxeo Corp.

Our San Francisco patent practitioners manage the patent portfolio for Voxeo--a leading provider of premise-based and hosted interactive voice response (IVR) and VoIP applications--which has a seminal patent on running voice applications based on Web-type instructions (voiceXML) posted on a Web page. (Ongoing)

Patent services for SanDisk Corporation

Our patent practitioners in the San Francisco office have represented SanDisk since 1988, around the time it was founded, and have helped SanDisk build a patent portfolio that has been widely licensed. SanDisk has received significant annual patent royalties in the last few years from this patent portfolio that our group obtained. A number of patents in this portfolio withstood many challenges by competitors in major ITC and District Court litigation. We continue to help SanDisk in the procurement of their patents. (Ongoing)