Joseph T. Helmsen

Patent attorney, USPTO registration number 54163, status Active.

Firm

DLA Piper LLP

Location

Philadelphia, PA

On the USPTO roster since

before May 2006

Joseph T. Helmsen is a USPTO-registered patent attorney (registration number 54163) at DLA Piper LLP, in Philadelphia, PA. The registration is active on the current USPTO roster, and Joseph T. Helmsen has been listed on the roster since before May 2006.

Philadelphia, PA has 513 registered patent practitioners in all: 377 patent attorneys and 115 patent agents.

Other registered practitioners in Philadelphia, PA

• Andrew N. Dietrick — Patent attorney, Reg. No. 75669, DLA Piper
• Chloe P. S. Dixon — Patent attorney, Reg. No. 79927, Condo Roccia Koptiw LLP
• John C. Donch, Jr — Patent attorney, Reg. No. 43593, Volpe And Koenig, P.C.
• John C. Dorfman — Patent attorney, Reg. No. 16703, Dann Dorfman Herrell and Skillman PC
• Dimitri P. Dovas — Patent attorney, Reg. No. 51627, Dovas Law P.C.
• Kathryn Doyle — Patent attorney, Reg. No. 36317, Saul Ewing Arnstein & Lehr LLP
• Timothy J. Doyle — Patent attorney, Reg. No. 58127, Baker Hostetler
• John E. Drach — Patent attorney, Reg. No. 32891, Paul & Paul

All patent attorneys and agents in Philadelphia, PA

Patent firms in Pennsylvania · Practitioners by state

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