John D. Denkenberger

Co-Managing Member
Chair of Litigation Group

John Denkenberger is a co-managing member of COJK, serves on the firm's executive committee, and is head of its litigation practice group. John has successfully litigated patent, trademark, trade secret, and unfair business competition issues in federal and state courts. He has also successfully litigated AIA post-grant challenges, including inter partes review, before the Patent Trial and Appeal Board. In addition to his litigation practice, John also advises clients on foreign and domestic patent and trademark procurement, technology licensing, and litigation strategies in a variety of technology areas, including mechanical, electromechanical, acoustics, and software. Prior to becoming an attorney, John worked for 10 years as a research and design engineer in the aerospace and aircraft industry.

Since its inception in 2013, John has been named to Intellectual Asset Management's Patent 1000 — The World's Leading Patent Professionals. He is ranked in Chambers USA for intellectual property; was selected by his peers as a leading intellectual property lawyer in The Best Lawyers in America; and has been named a Super Lawyer over the past decade.

 

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  • Professional Experience

    • Christensen O'Connor Johnson Kindness PLLC
      Seattle, WA

     

     

     

  • Technical Experience

    • Senior Specialist Engineer
      The Boeing Company, 1991 – 1997
    • Structural Engineer
      General Dynamics Corporation, 1988 – 1991
    • Associate Engineer
      Grumman Corporation, 1986 – 1988
  • Professional Affiliations

    • American Bar Association
    • American Intellectual Property Law Association
    • Asian Bar Association of Washington
    • King County Bar Association
    • Washington State Patent Law Association
  • Representative Experience

    • Bombardier Inc. v. Mitsubishi Aircraft Corporation et al 
      U.S. District Court for the Western District of Washington
      Representing plaintiff Bombardier, Inc. in a complaint alleging among other claims, trade secret misappropriation under federal and state law.
    • Hydro-Blok USA LLC, et al. v. wedi Corp. 
      U.S. District Court for the Western District of Washington
      Representing Hydro-Blok USA LLC, et al. in patent infringement, Lanham Act, false advertising, and breach of contract causes of action.
    • wedi Corp. v. Seattle Glass Block Window, Inc.
      U.S. District Court for the Western District of Washington
      Representing defendant Seattle Glass Block Window, Inc. against a complaint for various causes of action, including breach of contract, breach of fiduciary duty, fraud, and misappropriation of trade secrets.
    • The Tire Hanger Corporation v. Shinn Fu Company of America, Inc., et al
      U.S. District Court for the Central District of California
      Representing defendants Shinn Fu Company of America, Inc. and Shinn Fu Corporation against complaint for allegations of patent infringement.
    • 3BTech, Inc. v. Jingle Master International Ltd. (IPR2018-00663)
      Patent Trial and Appeal Board
      Representing patent owner Jingle Master International Ltd. in an inter partes review proceeding for a certain claim of US Patent No. 7,882,986 related to liquid dispensing devices.
    • New Flyer Industries Canada ULC, and New Flyer of America Inc. v. Rugby Aviation LLC d/b/a San Juan Airlines
      U.S. District Court for the Western District of Washington
      Local counsel representing plaintiff New Flyer Industries Canada ULC and New Flyer of America Inc. in a trademark infringement case.
    • Herbert E. Townsend v. Brooks Sports, Inc.
      U.S. District Court for the Western District of Washington
      Local counsel representing plaintiff Herbert E. Townsend in a patent infringement complaint.
    • Glen J. Lerner v. Executive Marketing Consultants, Inc., et al
      U.S. District Court of Nevada
      Representing defendant Executive Marketing Consultants, Inc. against a complaint for Lanham Act violation and trademark infringement.
    • MercAsia USA, Ltd. v. Jianqing “Johnny” Zhu and 3BTech, Inc.
      U.S. District Court for the Northern District of Indiana
      Representing MercAsia USA, Ltd. in enforcing patent rights and to obtain preliminary injunction related to consumer products.  
    • wedi Corp. v. Wright et al.
      U.S. District Court for the Western District of Washington
      Representing defendant Hydro-Blok USA LLC, et al. against complaint of various causes of action, including unjust enrichment based on misappropriation of trade secrets.
    • Microsoft Corporation v. The Software King et al. 
      U.S. District for the Western District of Washington
      Represented defendants against allegations of copyright and trademark infringement and related commercial claims.  
    • Protochips, Inc. v. Hummingbird Precision Machine Co. a/k/a Hummingbird Scientific
      U.S. District Court for the Western District of Washington
      Represented defendant Hummingbird Scientific against allegations of patent infringement pertaining to electron microscope sample holder technology, and to oppose a related motion for preliminary injunction.  Obtained early dismissal of case after opposing motion for preliminary injunction.  
    • Dorman Products, Inc. v. PACCAR Inc
      U.S. District Court for the Eastern District of Pennsylvania
      Successfully defended PACCAR Inc in a declaratory judgment action to enforce various patent rights and defend against various state law unfair business practice allegations.
    • FSI Fabrication, Inc. v Supreme International, Ltd.
      U.S. District Court for the Eastern District of Washington
      Represented defendant Supreme International, Ltd. against allegations of trade dress infringement.
    • Weatherhaven Resources, Inc. et al. v. Vantem Modular, LLC et al.
      U.S. District Court for the Western District of Washington
      Represented all defendants in patent litigation matter pertaining to mechanical devices.
    • Alfdex AB et al. v. PACCAR Inc
      U.S. District Court for the Northern District of Illinois
      Defended PACCAR Inc in patent infringement litigation pertaining to mechanical devices.  Obtained favorable settlement.
    • PACCAR Inc v. Four State Int'l Trucks, Inc. et al
      U.S. District Court for the Western District of Missouri
      Successfully represented plaintiff PACCAR Inc to enforce intellectual property rights in various design patents, trademarks, and trade dress.
    • InterForm Inc. v. Target Corp.
      U.S. District Court for the Eastern District of Texas
      Successfully defended Target Corporation in patent litigation matter pertaining to mechanical devices.
    • Molycorp Minerals, LLC v. HaloSource, Inc.
      U.S. District Court for the District of Colorado
      Represented defendant HaloSource, Inc. in a suit for breach of contract, misappropriation, and declaration of ownership of certain intellectual property related to water purification. Obtained favorable settlement.
    • Bitreserve, Ltd. et al v Bitgold, Inc. et al.
      U.S. District Court for the Southern District of New York
      Successfully represented Bitgold, Inc. et al. in a trademark infringement matter.
    • Microsoft Corp. v. Motorola, Inc. et al.
      U.S. District Court for the Western District of Washington
      Successfully represented third party Research In Motion, Ltd. to prevent public disclosure of sensitive information produced during the course of discovery.
    • Illinois Tool Works, Inc. et al. v. Seattle Safety, LLC
      U.S. District Court for the Western District of Washington
      Defended Seattle Safety, LLC in a suit for breach of contract, trade secret misappropriation, unfair competition and patent infringement related to crash test sleds. Obtained summary judgment on damages and non-infringement. Case settled thereafter on favorable terms.
    • Eazypower Corporation v. Jore Corporation
      U.S. District Court for the Northern District of Illinois

      Defended Jore Corporation in a patent infringement and patent mismarking case related to flexible extensions for powered screwdrivers.  Case settled on favorable terms.
    • QSC Holdings, Inc. et al. v. Eastern Acoustic Works, Inc.
      U.S. District Court for the Central District of California
      Defended Eastern Acoustic Works in patent case related to high frequency acoustic speakers.  Case settled on favorable terms.
    • Uniloc USA, Inc et al. v. Engrasp, Inc. et al.
      U.S. District Court for the Eastern District of Texas
      Defended Seagull Scientific, Inc. in a multi-defendant patent case related to a system for software registration.  Case settled on favorable terms.
  • Presentations & Publications

    Presentations

    • "How Recent Changes in U.S. Law Affect Patent Procurement Strategy and Portfolio Management," Commission of Intellectual Property 3AF, P2i2015 Intellectual Property and Innovation Symposium; (Toulouse, France, September 2015).
    • "Intellectual Property: From Fundamentals to Enforcement," Seattle University School of Law, Summer Practice Academy; (Seattle, WA, July 2015).
    • Panel Discussion, "Post Issuance Proceedings – Their Role in Your IP Strategy," Centerforce USA, Seattle IP Strategy Summit; (Seattle, WA, February 2015).
    • "H.R. 3309: 'The Innovation Act' and its Likely Impact on Patent Litigation," Licensing Executive Society, Vancouver Chapter; (Vancouver, BC, January 2014).
    • "Design Patents: An Important Tool in Your IP Toolbox," Christensen O'Connor Johnson Kindness; (Seattle, WA, December 2013).
    • "Federal Circuit Survey & USPTO Review Procedures," Christensen O'Connor Johnson Kindness; (Seattle, WA, June 2013).
    • "Panel Discussion on the Supreme Court's Quanta Decision," Washington State Patent Lawyers Association; (Seattle, WA 2008).
    • "Third Annual Advanced Workshop on Managing Patent Assets," Law Seminars International; (Seattle, WA, 2006).
    • "Second Annual Advanced Workshop on Managing Patent Prosecution and Litigation," Law Seminars International; (Seattle, WA 2005).

Education

    • J.D., cum laude, Seattle University School of Law, 1995
    • B.S., Mechanical Engineering, State University of New York at Buffalo, 1986

     

Bar & Court Admissions

    • Appeals Courts:  Federal Circuit
    • Bar Admissions:  Washington
    • District Courts:  D. Colo., E.D. Tex., W.D. Wash.
    • United States Patent and Trademark Office
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