Petrina Sze-Wai Hsi

Patent attorney, USPTO registration number 38496, status Active.

Firm

Amgen INC.

Location

Thousand Oaks, CA

On the USPTO roster since

before May 2006

Petrina Sze-Wai Hsi is a USPTO-registered patent attorney (registration number 38496) at Amgen INC., in Thousand Oaks, CA. The registration is active on the current USPTO roster, and Petrina Sze-Wai Hsi has been listed on the roster since before May 2006.

Amgen INC. has 60 registered patent practitioners on the roster (51 patent attorneys and 9 patent agents), so Petrina Sze-Wai Hsi works alongside 59 other registered practitioners there.

Thousand Oaks, CA has 66 registered patent practitioners in all: 58 patent attorneys and 8 patent agents.

Other registered practitioners in Thousand Oaks, CA

• Ngam Fung David Chan — Patent attorney, Reg. No. 76820, Instil Bio Inc.
• John E. Dixon — Patent attorney, Reg. No. 51332, John E. Dixon, Attorney at Law
• James Franklin Fleming — Patent attorney, Reg. No. 57332, Entralta P.C. Entralta P.C.
• Emily J. Gardel — Patent attorney, Reg. No. 75744, Wolf, Greenfield & Sacks P.C.
• Melissa R. Gibson — Patent attorney, Reg. No. 80315, Amgen
• Christina N. Gifford — Patent attorney, Reg. No. 44122, Amgen
• John M. Grohs — Patent attorney, Reg. No. 56768, Agensys INC
• Guylaine Hache — Patent attorney, Reg. No. 76083, Amgen Inc.

All patent attorneys and agents in Thousand Oaks, CA

Patent firms in California · Practitioners by state

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