Philadelphia, Pennsylvania

Patent attorneys in Philadelphia

Philadelphia, Pennsylvania is home to 505 USPTO-registered patent practitioners. Working with a local practitioner can streamline in-person meetings for invention disclosures, signing inventor declarations, and reviewing prior-art search results — but every USPTO practitioner is licensed to practice nationally, so a non-local choice is also valid. Local firms with the most USPTO-registered practitioners include McCarter & English, LLP, Ballard Spahr LLP, and Duane Morris LLP.

Benjamin S Chalfin

Reg. 74181

Patent agent

Flaster Greenberg PC

Philadelphia, PA · 19103

215-587-5607

Bruce J Chasan

Reg. 38764

Patent attorney

Law Offices of Bruce J. Chasan, LLC.

Philadelphia, PA · 19102

215-567-4400

Riya V Chaudhari

Reg. 78173

Patent agent

Panitch Schwarze Belisario & Nadel LLP

Philadelphia, PA · 19103

215-965-1284

Thomas R Chawluk· Jr.

Reg. 82608

Patent attorney

Philadelphia, PA · 19148

610-633-5681

Jefferson A. Cheatham

Reg. 67621

Patent attorney

Panitch Schwarze Belisario & Nadel LLP

Philadelphia, PA · 19103

215-965-1358

Vadim E Cherkasov

Reg. 65243

Patent attorney

McCarter & English, LLP

Philadelphia, PA · 19103

215-979-3893

John Sowden Child· Jr

Reg. 28833

Patent attorney

Paul & Paul

Philadelphia, PA · 19103-2728

215-568-4900

John A Chionchio

Reg. 40954

Patent attorney

Ballard Spahr LLP

Philadelphia, PA · 19103

215-864-8842

Dongwook C. Choe

Reg. 83205

Patent agent

Philadelphia, PA · 19104

484-639-9053

Andrew Y Chou

Reg. 70617

Patent agent

Schnader Harrison Segal & Lewis LLP

Philadelphia, PA · 19103

215-751-2000

Julie Chovanes

Reg. 33481

Patent attorney

Chovanes Law LLC

Philadelphia, PA · 19118

610-648-3994

Thomas Daniel Christenbury

Reg. 31750

Patent attorney

DLA Piper US LLP

Philadelphia, PA · 19103

215-656-3381

Joseph A Ciardi

Reg. 64760

Patent agent

McCarter & English, LLP

Philadelphia, PA · 19103

215-979-3834

Thomas J. Clare

Reg. 72458

Patent attorney

Ice Miller LLP

Philadelphia, PA · 19103

215-377-5030

Jennifer E Clark

Reg. 60585

Patent attorney

Philadelphia, PA · 19107

267-817-5917

John M. Cogill

Reg. 74211

Patent attorney

Volpe and Koenig P.C.

Philadelphia, PA · 19103

215-255-9155

Lester Harold Cohen

Reg. 29785

Patent attorney

Philadelphia, PA · 19116

215-676-5078

Nicholas Collura

Reg. 72157

Patent agent

Duane Morris LLP

Philadelphia, PA · 19103

215-979-1956

Joseph R Condo

Reg. 42431

Patent attorney

Condo Roccia LLP

Philadelphia, PA · 19103

215-558-5740

Rebecca J. Conway

Reg. 84248

Patent attorney

Ballard Spahr LLP

Philadelphia, PA · 19103

518-441-7554

Michael J Cornelison

Reg. 40395

Patent attorney

Law Offices Of Caesar Rivise Bernstein Cohen

Philadelphia, PA · 19103

215-567-2010

Kenneth Crimaldi

Reg. 40968

Patent attorney

Philadelphia, PA · 19119

847-227-7004

Peter J Cronk

Reg. 32021

Patent attorney

Duane Morris LLP

Philadelphia, PA · 19103

215-979-1252

Richard L Cruz

Reg. 52783

Patent attorney

DLA Piper US LLP

Philadelphia, PA · 19103

215-656-2446

Larry T Cullen

Reg. 44489

Patent attorney

Panitch, Schwarze LLP

Philadelphia, PA · 19103-7044

215-913-9542

Cong S Cun

Reg. 71992

Patent attorney

Philadelphia, PA · 19147

267-992-5154

Garth Maxwell Dahlen

Reg. 43575

Patent attorney

Mendelsohn, Dunleavy, P.C.

Philadelphia, PA · 19102

215-940-7767

Edward Babcock Davis

Reg. 77532

Patent attorney

Condo Roccia Koptiw LLP

Philadelphia, PA · 19103

267-817-7384

Kenneth J Davis

Reg. 50688

Patent attorney

Morgan, Lewis & Bockius LLP

Philadelphia, PA · 19103

215-963-5392

Sven De La Rosa

Reg. 84698

Patent agent

Flaster Greenberg P.C.

Philadelphia, PA · 19103

443-605-8934

Common questions

Do patent attorneys in Philadelphia cost more than the national average?

Patent attorney fees vary primarily by experience and complexity of the invention, not by city. A typical provisional patent application in the US runs $1,500 to $5,000; a non-provisional utility filing runs $5,000 to $15,000. Hourly rates in Philadelphia tend to track the broader Pennsylvania legal market.

How many USPTO practitioners list a Philadelphia office?

505 USPTO-registered patent practitioners list a Philadelphia mailing address on the OEDCI roster. You can sort by firm size and contact each directly using the phone numbers shown.

Can I work with a Philadelphia practitioner remotely?

Yes. All filings happen through USPTO's electronic Patent Center — no in-person presence is required. A Philadelphia-based practitioner is convenient for local inventor signings and in-person meetings but not a requirement for representation.