Matthew O. Duffey

Patent attorney, USPTO registration number 73865, status Active.

Firm

Amgen INC.

Location

Chappaqua, NY

On the USPTO roster since

January 2016

Matthew O. Duffey is a USPTO-registered patent attorney (registration number 73865) at Amgen INC., in Chappaqua, NY. The registration is active on the current USPTO roster, and Matthew O. Duffey has been listed on the roster since January 2016.

Amgen INC. has 60 registered patent practitioners on the roster (51 patent attorneys and 9 patent agents), so Matthew O. Duffey works alongside 59 other registered practitioners there.

Chappaqua, NY has 6 registered patent practitioners in all: 6 patent attorneys and 0 patent agents.

Other registered practitioners in Chappaqua, NY

• Anthony Amaral, Jr — Patent attorney, Reg. No. 29508
• Stanley Louis Amberg — Patent attorney, Reg. No. 20795, Orrick Herrington and Sufcliffe LLP
• Daniel S. Ortiz — Patent attorney, Reg. No. 25123
• Mark P. Stone — Patent attorney, Reg. No. 27954, Mark P. Stone, Attorney At Law
• Robert Cook Sullivan — Patent attorney, Reg. No. 20046

All patent attorneys and agents in Chappaqua, NY

Patent firms in New York · Practitioners by state

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