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 BakerHostetler, Dilworth Paxson LLP, and The University of Pennsylvania.

Zachary G. LaFramboise

Reg. 73436

Patent agent

Philadelphia, PA · 19103

925-300-6696

Nicole N Lai

Reg. 62841

Patent attorney

Dilworth Paxson LLP

Philadelphia, PA · 19102

215-575-7000

Alaina J Lakawicz

Reg. 75086

Patent attorney

BakerHostetler

Philadelphia, PA · 19103-7501

215-564-2576

William Edgar Lambert· III

Reg. 25429

Patent attorney

Philadelphia, PA · 19128-4121

215-483-8410

Jennifer E Langenberger

Reg. 52446

Patent agent

The University of Pennsylvania

Philadelphia, PA · 19104

215-573-4508

Pamela Lechleider

Reg. 68379

Patent agent

Woodcock Washburn LLP

Philadelphia, PA · 19104-2891

215-564-1509

Janet O Lee

Reg. 62076

Patent attorney

Jackson Lewis P.C

Philadelphia, PA · 19102

267-319-7829

Joshua H Lee

Reg. 80843

Patent agent

Philadelphia, PA · 19103

215-582-0812

Seung Jae Lee

Reg. 81560

Patent agent

Morgan, Lewis and Bockius LLP

Philadelphia, PA · 19103-2921

215-963-4909

Paul K Legaard

Reg. 38534

Patent attorney

Armstrong Teasdale LLP

Philadelphia, PA · 19103

267-780-2005

Paul A. Leicht

Reg. 71497

Patent agent

BakerHostetler

Philadelphia, PA · 19103-7501

215-564-1661

Robert D Leonard

Reg. 57204

Patent attorney

Volpe and Koenig, P.C.

Philadelphia, PA · 19103

215-568-6400

Jeffrey W Lesovitz

Reg. 63461

Patent attorney

Philadelphia, PA · 19103-8956

215-564-8956

Richard L Leung

Reg. 60711

Patent agent

Morgan, Lewis & Bockius LLP

Philadelphia, PA · 19103

215-963-5082

Gary Harris Levin

Reg. 28734

Patent attorney

Baker & Hosterler LLP

Philadelphia, PA · 19103

215-568-3100

Francine F Li

Reg. 68056

Patent attorney

Blank Rome LLP

Philadelphia, PA · 19103

215-569-5716

Shawn Shiqing Li

Reg. 58132

Patent agent

Zaher Li PLLC

Philadelphia, PA · 19103

267-684-9223

Yuqi Li

Reg. 80363

Patent attorney

BakerHostetler

Philadelphia, PA · 19103

215-564-3236

Daniel R Ling

Reg. 53223

Patent attorney

Volpe Koenig

Philadelphia, PA · 19103

215-568-6400

Lisa M. Lint

Reg. 60856

Patent agent

DLA Piper

Philadelphia, PA · 19103

215-656-3308

Fang Liu

Reg. 51283

Patent attorney

Panitch Schwarze Belisario & Nadel LLP

Philadelphia, PA · 19103

215-965-1280

Xun Liu

Reg. 81172

Patent agent

Philadelphia, PA · 19130

857-345-5138

Stephanie A Lodise

Reg. 51430

Patent attorney

BakerHostetler

Philadelphia, PA · 19103-7501

215-564-8918

Jonathan E. Loeb

Reg. 62884

Patent agent

Jonathan E. Loeb, Ph. D

Philadelphia, PA · 19118

650-714-7988

Jonathan G. Lombardo

Reg. 71734

Patent attorney

Baker & Hostetler LLP

Philadelphia, PA · 19103

215-568-3100

Armando Lopez

Reg. 81085

Patent agent

Philadelphia, PA · 19147

609-369-2903

Henryalexander M. Lopez

Reg. 84481

Patent attorney

Philadelphia, PA · 19103

425-218-5280

Gail A Lowe

Reg. 45296

Patent attorney

Philadelphia, PA · 19119

215-843-3576

Joseph Lucci

Reg. 33307

Patent attorney

BakerHostetler

Philadelphia, PA · 19103-7501

215-564-8370

Jiazhong Luo

Reg. 59115

Patent attorney

Duane Morris LLP

Philadelphia, PA · 19103-4196

215-979-1809

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.