Gregory S. Tamkin
PEOPLE

Gregory S. Tamkin

Partner
tamkin.greg@dorsey.com

Overview

GREG TEAMS WITH CLIENTS TO HELP GUIDE THEM THROUGH PROBLEMS THAT MAY RESULT IN NEEDING TO DEFEND A LAWSUIT OR THAT MAY REQUIRE AGGRESSIVELY ENFORCING RIGHTS THROUGH LITIGATION.

After assessing his client’s business needs and long-term strategies, Greg maximizes the legal tools available to obtain the best results possible for his clients.

Greg has argued intellectual property disputes and commercial cases in venues all over the country, including winning international arbitrations, jury trials and appellate matters. He routinely advises clients concerning all aspects of intellectual property matters, partnership disputes, securities cases, products liability issues, real estate litigation, and general contract claims.

Education & Admissions

University of Virginia School of Law (J.D., 1994)

Dartmouth College (A.B., 1991), cum laude

Admissions

  • California
  • Colorado
  • U.S. Court of Appeals for the Ninth, Tenth and Federal Circuits
  • U.S. District Courts for Colorado
  • U.S. District Courts for the Northern, Eastern, Central and Southern Districts of California
  • U.S. District Courts for the Eastern District of Texas
  • U.S. District Court for the Northern District of Illinois

Languages

  • Spanish

Experience

Representative Litigation

  • Solannex, Inc. v MiaSole, Inc., Represented holder of patents concerning photovoltaic technology in obtaining a confidential settlement following claim construction.
  • Hunter Douglas v. Mechoshade, Successfully defended against claim of patent infringement between competitors in electronic shade industry.
  • Visioneer, Inc. v. KeyScan, Inc., Defended document imaging company in patent infringement matter.
  • Tandberg Data Corporation v. Hewlett-Packard Company, Represented data storage technology provider against Hewlett-Packard in claims and counterclaims of patent infringement concerning seven patents through successful claim construction.
  • Xantrex Technology, Inc. v. Advanced Energy Industries, Inc., Led team that obtained preliminary injunction to prevent former vice president of engineering to move to a competitor and start up competing division with use of trade secrets.
  • Fiber Optic Designs, Inc. and Holiday Creations, Inc. v. Seasonal Specialties, LLC, Led team in bringing a preliminary judgment motion against an infringer of LED based products, successfully overturning unfavorable district court ruling on appeal at Federal Circuit.
  • Bristol Bay v. Penguin Publishing, Inc., et al., Successfully dismissed case asserted against publishing company that its advertising claims were false and caused damages leading to the production of an unsuccessful Hollywood movie. Handled the case through appeal at the Colorado Supreme Court.
  • Cooper v. NCS Pearson, Inc., Successfully defeated copyright claims related to ownership of derivative testing materials. After winning summary judgment at the trial court level, we were successful in having the Tenth Circuit affirm.
  • Central Garden & Pet Company v. Doskocil Manufacturing Company, Inc., Following a trial on the merits at the Trademark Trial and Appeals Board, obtained a verdict allowing registration of our client’s mark by proving opposer’s mark was invalid for violating provision preventing trafficking trademarks.
  • T.F.H. Publications, Inc. v. Aspen Pet Products, Inc., Following a successful claim construction hearing leading to a summary judgment in favor of our client, successfully defended claim construction at the Federal Circuit, ending the case.
  • Versata Software, Inc. v. Ameriprise Financial Services, Inc., After obtaining summary judgment preempting all asserted claims based on the Copyright Act, confidentially resolving dispute.
    Rocky Mountain Honey Smoked Fish Company v. Einstein Noah, Brought a preliminary injunction motion to prevent use of client’s trademark by competitor for same product, resulting in competitor’s ceasing to use our client’s mark.
  • Global Cooling v. EC Sagittar, B.V., Successfully defended trade secret action in which our client was accused of misappropriating trade secrets of U.S. Company.

News & Resources

Articles

"Alice v. CLS Bank" Applied Broadly by the Federal Circuit

News & Press Mentions

Nine Dorsey Lawyers in Denver Selected for Inclusion in The Best Lawyers in America 2019
Seventeen Dorsey Attorneys Ranked 2018 IP Stars
Chambers USA 2018 Recognizes Dorsey Lawyers and Intellectual Property Practice in Denver
Dorsey Partner Greg Tamkin Discusses Hiring and Retaining Female Lawyers
Super Lawyers Recognizes Nine Dorsey Lawyers in Denver
Dorsey Partner Greg Tamkin Remarks on Denver Oil Tycoon
Benchmark Litigation Recognizes 16 Dorsey Lawyers
Eight Dorsey Lawyers in Denver Selected for Inclusion in The Best Lawyers in America 2018
Six Dorsey Offices Recognized by Global Law Experts
Chambers USA 2017 Recognizes Dorsey Lawyers and Intellectual Property Practice in Denver
Chambers USA 2017 Recognizes Dorsey Lawyers and Practices
Super Lawyers Recognizes Seven Dorsey Lawyers in Denver
Twelve Dorsey Attorneys Named 2017 IP Stars
IAM Patent 1000 Recognizes Six Dorsey Attorneys in "World’s Leading Patent Professionals 2016"
Dorsey Partners Charlene Krogh, Greg Tamkin, Paul Thompson, Lee and Lisa Osman Named to 5280 Magazine's 2017 Top Lawyers
Benchmark Litigation Recognizes 17 Dorsey Lawyers
Dorsey Nationally Ranked and Named Trademark Law Firm of the Year by "U.S. News – Best Lawyers" Best Law Firms
8 Dorsey Lawyers in Denver Selected for Inclusion in The Best Lawyers in America 2017
Benchmark Litigation Recognizes 15 Dorsey Lawyers
Chambers USA 2016 Recognizes Multiple Dorsey Lawyers and Practice Groups in Denver
Chambers USA 2016 Ranks Dorsey Lawyers and Practices
Thirteen Dorsey Attorneys Named 2016 IP Stars
Super Lawyers Recognizes Eleven Dorsey Lawyers in Denver
Benchmark Litigation Recognizes 15 Dorsey Lawyers
IAM Patent 1000 Recognizes Five Dorsey Attorneys in World’s Leading Patent Professionals 2015

Industries & Practices

International Arbitration & Litigation
Trademark, Copyright, Advertising & Brand Management
  • Banking and Financial Institutions
  • Class Action Litigation
  • Commercial Litigation
  • Energy
  • Food, Beverage & Agribusiness
  • Health Care
  • Intellectual Property Litigation
  • International Arbitration & Litigation
  • Israel
  • LegalMine Document Review Solutions
  • Mining & Natural Resources
  • Products Liability
  • Technology Commerce
  • Trademark, Copyright, Advertising & Brand Management

Professional & Civic

Professional Achievements

  • Member, Colorado Bar Association
  • Member, California Bar Association
  • Dartmouth Association of the Rocky Mountains
  • Colorado IP Inn of Court
  • IP Owners Association
  • Colorado Lawyers Committee, Board of Directors

Accolades

Chambers USA 2018 Leading Individual  Ranked in USA Chambers 2017 Leading Individual  Ranked In - USA Chambers and Partners 2016 - Leading Individual      
Ranked in Chambers USA 2015 - Leading Individual

  • Listed as a "Best Lawyers in America", 2017-2018
  • Named one of “America’s Leading Business Lawyers” by Chambers USA (Intellectual Property), 2009-2018
  • Top Tier lawyer, recommended by The Legal 500
  • One of the Top 100 Lawyers in Colorado, 2018
  • Listed as a Colorado Super Lawyer, 2009-2018
  • Listed as a Top Lawyer in Denver by 5280 The Denver Magazine​, 2017

  • Recognized as a "Local Litigation Star – Colorado" by Benchmark Litigation, 2015-2018
  • Recognized as an "IP Star" in 2016-2018 by Managing Intellectual Property Handbook
  • Recognized in IAM Patent 1000 - World's Leading Patent Practitioners, 2013-2015
  • Recognized as "Trial Attorney of the Year in Colorado" by Global Law Experts, 2015
Gregory S. Tamkin