William J. Castillo
Patent attorney, USPTO registration number 56515, status Active.
- Firm
- Caesar Rivise Bernstein Cohen & Pokotilow, Ltd
- Location
- Philadelphia, PA
- On the USPTO roster since
- before May 2006
William J. Castillo is a USPTO-registered patent attorney (registration number 56515) at Caesar Rivise Bernstein Cohen & Pokotilow, Ltd, in Philadelphia, PA. The registration is active on the current USPTO roster, and William J. Castillo has been listed on the roster since before May 2006.
Caesar Rivise Bernstein Cohen & Pokotilow, Ltd has 2 registered patent practitioners on the roster (2 patent attorneys), so William J. Castillo works alongside 1 other registered practitioner there.
Philadelphia, PA has 513 registered patent practitioners in all: 377 patent attorneys and 115 patent agents.
Other registered practitioners in Philadelphia, PA
- James J. Kozuch — Patent attorney, Reg. No. 39733, Caesar Rivise, P.C.
- Laura E. Krabill — Patent attorney, Reg. No. 41913, Ballard Spahr Andrews & Ingersoll LLP
- Seth A. Kramer — Patent attorney, Reg. No. 67813, Fox Rothschild LLP
- Tyler C. Krauth — Patent agent, Reg. No. 70551, Biomeme, Inc.
- Leonid Kravets — Patent agent, Reg. No. 59439, Panitch Schwarze Belisario & Nadel
- Kelly A. Krellner — Patent attorney, Reg. No. 76915, Dechert LLP
- Danielle C. Kucera — Patent attorney, Reg. No. 76080, Volpe And Koenig, P.C.
- Roman Kucharczyk — Patent agent, Reg. No. 65767, FMC Corporation
All patent attorneys and agents in Philadelphia, PA
Patent firms in Pennsylvania · Practitioners by state
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