Advance with confidence;
Seed IP is by your side

Innovation is a team sport. While one “eureka” moment can create a breakthrough, that’s really just the first step in bringing a successful innovation to market.

Why Choose
Seed IP Law Group


Our Approach

We believe an integrated strategy for protecting intellectual assets is critical to establishing strong and valuable intellectual property portfolios. We employ a team approach, in which attorneys with complementary experience and skills work together to provide the most comprehensive and cost-effective legal services possible. We leverage our legal and technical expertise to develop programs designed to address each client’s particular business needs and objectives. In developing a customized program, we work with a company’s management team to identify core concepts, we evaluate the novelty of the intellectual property at issue, and we work with inventors to clearly understand the invention.

Secure Communication & Workflow

Timely, precise, and secure communication is critically important in today’s modern business environment and is absolutely essential in providing patent, trademark, and copyright protection for our clients.

Our Support Team

Seed Intellectual Property Law Group includes an experienced and knowledgeable support staff who assists our attorneys and clients with comprehensive, efficient, and cost-effective legal services.

Our support team includes:
  • A team of legal assistants with extensive experience in U.S. patent prosecution

  • Paralegals dedicated to international patent filings

  • Paralegals supporting trademark research and filings

  • Paralegals and other staff supporting litigation

  • Dedicated docketing department to track all forms of legal due dates

  • A team of draftsmen that prepare all types of design and utility patent application drawings and figures

  • Full-service accounting department

  • Word processors proficient in many different software applications

  • Full-service information technology team, including support for secure web-based access to electronic documents


Our technology infrastructure provides our attorneys with the necessary tools needed to provide the highest level of legal service 24 hours a day.


Our secure extranet gives our clients access to key documents allowing them to collaboratively manage their intellectual property portfolios. We also provide a help desk to assist our clients with using the system.


Our clients are on the leading edge of science and technology. We’ve designed our client service systems to respond to and support their needs.


Our firm, Seed Intellectual Property Law Group LLP, was founded in 1962 by Richard W. Seed and Benjamin F. Berry. As a leading intellectual property law firm based in the Pacific Northwest, our group consists of over fifty attorneys and agents, and a staff of over seventy dedicated professionals. Seed IP’s clients range in size from individuals and start-up companies to established multinational corporations with IP needs ranging from trademark clearance to protecting complex chemical and biotechnology patents.

est. 1962

Seed & Berry

est. 1967

Seed, Berry & dowrey

est. 1971

Seed, Berry, dowrey & Cross

est. 1974

Seed, Berry, vernon & baynham

est. 1985

Seed & Berry LLP

est. 2000

Seed Intellectual Property LAw group Pllc

est. 2015

Seed Intellectual Property LAw group llP

Meet the Executive Team

Kevin S. Costanza

Managing Partner

Managing Partner

Kevin S. Costanza

Kevin Costanza's practice focuses on mechanical patent prosecution, trademark clearance, and registration, and intellectual property licensing. He received a B.S. in Engineering from the University of California at Irvine in 1990, concentrating on mechanical engineering and material sciences. Kevin received his J.D. (cum laude) from Seattle University School of Law in 1995.

Consumer Products & Services, Industrial Design, Mechanical Engineering, Medical Devices
Copyright,IP Agreements & Licensing, IP Litigation & Enforcement, Patent, Strategic Counseling, Trade Secrets, Trademark
David V. Carlson



David V. Carlson

Chair of the Electrical Engineering & Computer Science Group

David's practice focuses on electrical, software, and mechanical patent matters, including obtaining, licensing, and litigating patents. He has a great deal of practical experience providing strategic planning to protect a client's technology. He can prepare a strategy to assist your company in obtaining patent coverage on your key inventions. If you need to enforce these patents or defend a lawsuit against your company, he has extensive experience assisting companies protecting themselves and their IP.

Alternative Energy, Consumer Products & Services, Electrical Engineering, Electronics & Semiconductors, Medical Devices, Software & Internet
IP Agreements & Licensing, IP Litigation & Enforcement, Patent, Strategic Counseling, Trade Secrets
Chandra E. Eidt



Chandra E. Eidt

Chandra received her J.D. from the University of California, Berkeley in 2004, and earned B.A.s in Biology and Spanish from Indiana University, Bloomington, in 1998. Before law school, Chandra was a research assistant with the Lawrence Livermore National Laboratory (Biology & Biotechnology Research Program) and a research and development assistant with a pharmaceutical company making recombinant protein therapeutics.

Biotechnology, Chemistry, Consumer Products & Services, Medical Devices, Nanotechnology, Pharmaceuticals
IP Agreements & Licensing, IP Litigation & Enforcement, Patent, Strategic Counseling
Shoko I. Leek



Shoko I. Leek

Shoko's practice focuses on preparing and prosecuting patent applications in electronics, telecommunications, optics, software, and mechanical engineering. She has extensive experience in counseling in general intellectual property matters, including patents and trademarks, developing strategic patent portfolios, conducting a due-diligence review of patent portfolios, preparing patent infringement and validity opinions, preparing patent assertion material, and intellectual property licensing negotiation and agreements. Shoko received a B.S. in Physics from the University of Washington in 1998 and her J.D. from the University of Washington School of Law in 1997.

Consumer Products & Services, Electrical Engineering, Electronics & Semiconductors, Mechanical Engineering, Medical Devices, Software & Internet, Telecommunications
IP Agreements & Licensing, Patent, Strategic Counseling, Trade Secrets
Samuel E. Webb



Samuel E. Webb

Sam has expertise in U.S. and international patent matters pertaining to life science, chemical, and medical device technologies. Before joining Seed IP, Sam was a partner at Stoel Rives LLP (2006-2014) and served as senior intellectual property counsel at NPS Pharmaceuticals in Salt Lake City, Utah (2004-2006), as a patent attorney at Johnson & Johnson/ALZA Corp. in Mountain View, California (2001-2004), and as a patent agent and associate patent attorney at Task Britt in Salt Lake City (1998-2001).

Alternative Energy, Biotechnology, Chemistry, Medical Devices, Pharmaceuticals
IP Agreements & Licensing, Patent, Strategic Counseling, Trade Secrets
Tom Bahn

Executive Director

Executive Director

Tom Bahn

Tom is delighted to be part of Seed IP. As the firm’s Executive Director, Tom focuses on the firm’s strategic and organization planning while ensuring that the firm’s operations meet the needs of clients and attorneys alike.

Amy Strok

Director of Human Resources

Director of Human Resources

Amy Strok

Amy is a certified human resources professional within the Seattle legal community. She has played an active role in the legal community and local law schools. Amy currently serves as the President of the Puget Sound Association of Legal Administrators.

Meet Our Valued Clients

At Seed IP, we value the relationships we've built with every one of our clients over the past 59 years. We are proud of the work we have done for them and grateful for the opportunities and successes we've had along the way. We look forward to working with you and your team in the future.

See Client List

It's not what we say, it's what they say

Seed IP is one of the leading intellectual property firms in the Pacific Northwest, with national and international reach. Please see the list below for just some of the various accolades and honors recently bestowed upon the firm and its attorneys.

Honors & Awards

The Best Lawyers in America®

Seed IP has seventeen attorneys listed in the 2022 edition of The Best Lawyers in America®, the oldest and most respected peer-review publication in the legal profession. Additionally, nine attorneys were selected to the second annual “Ones to Watch” list in 2022.

"Best Law Firms” (U.S. News & World Report® / Best Lawyers®)

In 2022, Seed IP is ranked nationally in six practice areas and ranked regionally in seven practice areas.

WTR (World Trademark Review®) Global Leaders 2021

WTR (World Trademark Review®) Global Leaders 2021 | Russell C. Pangborn recognized in 2019, 2020, and 2021. Additionally, Russ was interviewed in years 2020 and 2021.

Washington’s Best Workplaces 2021 (Puget Sound Business Journal)

Seed IP has been recognized as one of Washington’s Best Workplaces for 2021, in the Large Companies category.

Top Patent Firms 2020 (Harrity & Harrity, LLP)

Seed IP is ranked at #28 nationally for top patent law firms, based on the total number of U.S. utility patents (1,509) that issued during 2020.

Client Choice Awards (Lexology + International Law Office)

Russell C. Pangborn honored in 2018; Qing “Becky” Lin, Ph.D., in 2017; and E. Russell Tarleton in 2015.

World Intellectual Property Review (WIPR) Leaders 2020

Russell C. Pangborn recognized in years 2017-2020.

Legal Leaders™ (ALM) / Martindale-Hubbell® Top Rated AV Preeminent™ Intellectual Property Lawyers 2021

Seed IP has seven AV-rated attorneys, and one Distinguished rated attorney as of 2021.

IAM Strategy 300: The World’s Leading IP Strategists 2021

Brooke W. Quist recognized in the 2021 edition. The guide identifies the individuals who are leading the way in the development and implementation of strategies that maximize the value of IP portfolios.

IAM Patent 1000–The World’s Leading Patent Professionals 2021

Seed IP has nine “Recommended” or “Highly Recommended” partners on “The World’s Leading Patent Professionals 2021” list, and the firm itself is ranked in the “Gold Band” for Firms: Prosecution, as well as “Highly Recommended” for Firms: Transactions, in 2021.

Chambers USA 2021

Seed IP received a firm ranking, along with having two of its partners, Karl Hermanns and Kevan Morgan, listed as “Notable Practitioners” in the 2021 edition.

Thomson Reuters’ Washington Super Lawyers/Rising Stars 2021

In 2021, Seed IP has seven attorneys selected to Super Lawyers and seven attorneys selected to Rising Stars.

Managing Intellectual Property’s IP Stars 2021

In 2021, Seed IP ranked as a “Highly Recommended Firm” for intellectual property matters, and has five attorneys listed as ”IP Stars” for patent and trademark matters.

World Trademark Review 1000 – The World’s Leading Trademark Professionals 2021

Seed IP listed as “Recommended Firm” in 2021. Kevin Costanza, Marc Levy and Russell Pangborn listed as “Recommend Individuals” in 2021.

The Best Lawyers in America© 2021

Seed IP has seventeen attorneys listed in the 2021 edition of The Best Lawyers in America®, the oldest and most respected peer-review publication in the legal profession. Additionally, E. Russell Tarleton was selected as “Lawyer of the Year” for Trademark Law in 2021, and Thomas A.Shewmake was selected to the inaugural “Ones to Watch” list in 2021.

U.S. News & World Report / Best Lawyers “Best Law Firms” 2021

In 2021, Seed IP is ranked nationally in four practice areas and ranked regionally in five practice areas.

Diversity Snapshot 2021 – Law360 (A LexisNexis® Company)

In 2021, Seed IP is ranked at #5 on the Law Firms With the Most Diverse Equity Partnerships list, and at #10 on the Law Firms With the Most Minority Attorneys list, both for U.S. law firms with 100 or fewer attorneys.