Washington

Patent attorneys in Washington

Washington hosts 1,446 active patent practitioners registered with the USPTO Office of Enrollment and Discipline. Patent attorneys and patent agents can both prepare and file patent applications, but only patent attorneys can also offer legal advice on prosecution strategy, freedom-to-operate analyses, and infringement opinions in Washington. Practitioners are concentrated across 20 cities, with the largest clusters in the metros listed below. Notable firms with multiple registered practitioners in the state include Christensen O'Connor Johnson Kindness PLLC, Seed Intellectual Property Law Group LLP, and Microsoft Corporation.

Top cities in Washington

All practitioners in Washington

James C Larsen

Reg. 58565

Patent attorney

Larsen IP, PLLC

Bothell, WA · 98021

425-298-6846

Robert K. Lau

Reg. 45441

Patent agent

Robert K. Lau, Esquire

Bellingham, WA · 98229

360-283-5265

Andrew L. Laughlin

Reg. 70991

Patent attorney

Christensen O'Connor Johnson Kindness PLLC

Seattle, WA · 98101

206-682-8100

Andrew M Launder

Reg. 78845

Patent agent

Davis Wright Tremaine LLP

Seattle, WA · 98104

503-778-5241

Robert C Laurenson

Reg. 34206

Patent attorney

Intellectual Ventures

Bellevue, WA · 98005

425-495-8691

Steven D Lawrenz

Reg. 37376

Patent attorney

Seed IP Law Group

Seattle, WA · 98104

206-622-4900

Llewellyn Rhys Lawson

Reg. 57869

Patent attorney

Christensen O'Connor Johnson Kindness PLLC

Seattle, WA · 98101-3029

206-682-8100

Ellen S Lazor

Reg. 42729

Patent attorney

Maple Valley, WA · 98038

206-954-8911

Chen Le

Reg. 79818

Patent agent

Renton, WA · 98058

425-628-5589

Dien B. Le

Reg. 63201

Patent agent

Renton, WA · 98055

425-652-6987

Patricia Leahu

Reg. 63698

Patent attorney

Keyport, WA · 98345

847-226-8668

Stephen John Leahu

Reg. 58592

Patent attorney

U.S. Navy

Keyport, WA · 98345

847-420-8557

Celia Hope Leber

Reg. 33524

Patent attorney

LEBER IP LAW

Seattle, WA · 98117

541-526-1234

Michelle Marie LeCointe

Reg. 46861

Patent attorney

Seed IP LLP

Seattle, WA · 98104

206-622-4900

Bernadette J Lee

Reg. 60298

Patent attorney

Mill Creek, WA · 98082-1893

425-999-2925

Hyun Kyu Lee

Reg. 82031

Patent attorney

Seed Intellectual Property Law Group LLP

Seattle, WA · 98104

206-694-4893

Jae Youn Lee

Reg. 77855

Patent agent

Seattle, WA · 98103

206-527-7101

Jennifer J Lee

Reg. 67853

Patent agent

Pacific Northwest National Laboratory

Richland, WA · 99352

509-372-6960

Katherine D Lee

Reg. 44865

Patent attorney

Polsinelli PC

Seattle, WA · 98104

206-393-5400

Lewis C Lee

Reg. 34656

Patent attorney

Lee & Hayes, PLLC

Spokane, WA · 99201

509-324-9256

Philip C. Lee

Reg. 70879

Patent attorney

Microsoft Corporation

Redmond, WA · 98052

415-787-2618

Sunah K Lee

Reg. 53198

Patent attorney

Microsoft Corporation

Redmond, WA · 98052

142-542-14178

Tricia E Lee

Reg. 42793

Patent agent

White Salmon, WA · 98672

509--77-4-8577

Virginia Y Lee

Reg. 57122

Patent attorney

Bainbridge Island, WA · 98110

603-205-6285

Won Jae Lee

Reg. 70172

Patent agent

Bellevue, WA · 98006

425-747-2748

Shoko I Leek

Reg. 43746

Patent attorney

Seed Intellectual Property Law Group LLP

Seattle, WA · 98104-7092

206-622-4900

James Francois Leggett

Reg. 28733

Patent attorney

Tacoma, WA · 98417

253-208-7869

Richard Brian Leggett

Reg. 59485

Patent attorney

Seattle, WA · 98102

206-579-1555

Ping Lei

Reg. 76303

Patent attorney

Lei Law Group, PLLC

Seattle, WA · 98111

713-498-4329

Debra K Leith

Reg. 32619

Patent attorney

Cooley LLP

Seattle, WA · 98101-1397

206-452-8761

Common questions

Do I need a patent attorney based in Washington?

No. Every USPTO-registered patent practitioner is licensed to file applications on behalf of inventors in any state, regardless of where the practitioner's office is. Choosing a Washington-based practitioner can simplify in-person inventor signings, local meetings, and same-time-zone calls, but it is not a legal requirement.

How many patent attorneys are licensed in Washington?

1,446 active USPTO-registered patent practitioners list a Washington office address on the OEDCI roster. This includes both patent attorneys (who can also offer legal advice) and patent agents (who can prepare and file patents but not offer broader legal advice).

What is the difference between a patent attorney and a patent agent?

Both pass the USPTO Patent Bar and can prepare, file, and prosecute patent applications. Only patent attorneys also hold a state bar license, meaning they can additionally offer legal advice on infringement, licensing, and litigation strategy. Patent agents tend to charge less per hour and are common at large in-house IP departments.