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Your Innovation Partners

We Protect the Ideas That Make the World a Better Place

History of Excellence in IP Law

Seattle’s Premier IP Law Firm Since 1929

At COJK, our only focus is on the protection of our clients’ valuable intellectual property rights. This demanding and exacting legal practice requires professionals with technical industry experience and sound intellectual property legal knowledge. Our 95-year history of excellence in intellectual property law is the direct result of generations of highly motivated, skillful, creative, and responsive attorneys who have an intimate knowledge of the industries they serve.

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Seattle’s Premier IP Law Firm Since 1929
95 Years In Practice

Highly Skilled Professionals

Meet Our Exceptional Legal Team

COJK attorneys approach every challenge with a high level of sophistication, innovation, passion, and creativity. We are committed to seeking and delivering strategic advantages for our clients.

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Why Clients Choose COJK

Intellectual property is at the forefront of the law. COJK attorneys understand that IP law has the very real potential to be defined with each new patent, trademark, or copyright application.

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COJK Recognized in 2025 Edition of <em>U.S. Best Law Firms</em><sup>®</sup>

COJK Recognized in 2025 Edition of U.S. Best Law Firms®

Best Lawyers® recognized COJK as a top intellectual property law firm in the Seattle Metropolitan area in the 15th edition of Best Law Firms®. The firm also appears as a tier-ranked IP firm in ...

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Protecting Innovation for 95 Years

Learn More About The Services We Offer

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