Ching Cheng Chang

Patent attorney, USPTO registration number 73240, status Active.

Firm

Arentfox Schiff LLP

Location

Washington, DC

On the USPTO roster since

January 2016

Ching Cheng Chang is a USPTO-registered patent attorney (registration number 73240) at Arentfox Schiff LLP, in Washington, DC. The registration is active on the current USPTO roster, and Ching Cheng Chang has been listed on the roster since January 2016.

Arentfox Schiff LLP has 6 registered patent practitioners on the roster (4 patent attorneys and 2 patent agents), so Ching Cheng Chang works alongside 5 other registered practitioners there.

Washington, DC has 2,644 registered patent practitioners in all: 1,995 patent attorneys and 568 patent agents.

Other registered practitioners in Washington, DC

• Joanna Y. Chen — Patent agent, Reg. No. 72754, Polsinelli PC
• Clifford Y. Chen — Patent attorney, Reg. No. 60697, Central Intelligence Agency Office of General Counsel
• Henry K. Chen — Patent attorney, Reg. No. 82100, CBP Regulations and Rulings, Office of Trade
• Clark S. Cheney — Patent attorney, Reg. No. 52731, U.S. International Trade Commission U.S. International Trade Commission
• Timothy D. Cheng — Patent attorney, Reg. No. 64472
• Lee Cheng — Patent attorney, Reg. No. 40949, Cheng Law Group, PLLC
• Soonwuk Cheong — Patent attorney, Reg. No. 62793, CL Interlectual LLC
• Randall Hale Cherry — Patent attorney, Reg. No. 51556, U.S. Environmental Protection Agency

All patent attorneys and agents in Washington, DC

Patent firms in District of Columbia · Practitioners by state

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