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Calfee’s intellectual property litigators work with clients to protect their investments in ideas. Serving a broad spectrum of public and privately held companies, our attorneys represent plaintiffs and defendants with respect to patent, copyright, trade secret, trademark, trade dress, product configuration, unfair competition, and licensing claims. Our attorneys focus on all major scientific disciplines including mechanical, electrical and chemical engineering; chemistry; biotechnology; computer hardware, software and circuit design; semiconductors; and architecture.

The litigators in our Intellectual Property group have gained extensive and valuable intellectual property litigation experience dating back to the 1980s when the group was formed. At any time, Calfee has 20+ attorneys devoting all or a substantial amount of their time to intellectual property litigation. Calfee’s IP litigators also are supported by and can draw upon the sophisticated case management technology and personnel of Calfee’s extensive general litigation practice if needed.

Our intellectual property litigators have represented clients in matters before the USPTO, federal and state courts in many of the 50 states, as well as matters involving the U.S. Customs Office, International Trade Commission and Federal Trade Commission. Our attorneys have briefed and argued cases to the Court of Appeals for the Federal Circuit and other appellate courts. Many of these matters were for clients whose patent or trademark portfolio also is maintained by Calfee. 

Additionally, understanding that intellectual property litigation can be very expensive, the litigators in our Intellectual Property group advise our clients as to the full range of alternatives for resolving intellectual property disputes including licensing, cross-licensing or joint venture negotiations, specialized proceedings in the USPTO called “IPRs,” alternative dispute resolution proceedings, and litigation in federal and state courts.


Chambers USA Rankings for Calfee IP and Litigation

For well over a decade, our Intellectual Property group has been ranked and recognized by Chambers USA. In 2019, Chambers USA researchers reported that Calfee's IP group is "esteemed for its handling of IP litigation and portfolio management on behalf of large clients in Ohio and the Midwest and across the USA. [They are] highly experienced in the engineering, chemical and biological sectors, with notable abilities in handling matters for consumer products and manufacturing clients." One client reports: "It's an excellent firm; they're strategic and bring a lot of value to the table."

Chambers USA has also reported that their researchers found Calfee's IP team to be held in "very high regard by fellow practitioners who note our extensive experience representing clients in wider patent and trademark matters, IP litigation matters, appellate work, and advising companies on managing IP assets in China."

Our IP litigators often rely on our general litigation group for assistance which has a Chambers USA Band 4 Ranking (Ohio)

For well over a decade, our Litigation group and individual litigation attorneys have been ranked and recognized by Chambers USA.

In 2019, one client told Chambers USA researchers: "They are extremely knowledgeable and responsive," further adding: "They clearly have our company's best interests at heart." Other sources also comment: "Calfee acts as a true strategic partner and develops strategies that incorporate our business objectives as well as political realities."

Chambers researchers previously reported that sources described Calfee's Litigation group as "highly responsive and their lawyers are really devoted to their clients’ interest. They're thoughtful, creative and they work hard.”

Chambers researchers further noted that peers commented, “The quality is very high across the board; it’s a wonderful group of lawyers.”

U.S.News – Best Lawyers "Best Law Firm" Rankings

Calfee was selected for inclusion in the 2020 "Best Law Firms" rankings by U.S.News –Best Lawyers in America in Intellectual Property Litigation (National Tier 3 and Metropolitan Tier 1 Cleveland).

Benchmark Litigation Rankings

Calfee has been selected for inclusion by Benchmark Litigation 2020 as a "Recommended" litigation firm in Ohio. Several of Calfee's Litigation attorneys have been ranked as Leading Litigators by Benchmark Litigation 2020.




Our attorneys have prosecuted and defended litigation involving, for example, the following subjects:

  • Agrigenetics
  • Alternative fuels
  • Automotive assemblies
  • Batteries
  • Business methods/websites
  • Chemical compositions
  • Computer software
  • Consumer products
  • Firearms
  • Homecare health aids
  • Locks and security devices
  • Medical devices
  • Mobile communications
  • MPEG video codes
  • Optical analyzers
  • Paint removal products
  • Personal computers and printers
  • Pharmaceuticals
  • Plumbing fixtures
  • Polymers
  • Polymer circuit protection devices
  • Semi conductors
  • Tires
  • Welders
  • Wheelchairs
  • Wireless communications devices and applications



  • Patent, trademark and copyright infringement
  • Patent interferences, reexamination and reissue proceedings before the U.S. Patent and Trademark Office
  • Trademark opposition and cancellation proceedings
  • Trade secret misappropriation
  • Unfair competition violations
  • International Trade Commission proceedings
  • U.S. Customs conflicts
  • Temporary restraining orders, preliminary and permanent injunctions, seize orders

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Practice Contacts

Chambers USA researchers reported that sources describe Calfee's Litigation group as "highly responsive and their lawyers are really devoted to their clients’ interest. They're thoughtful, creative and they work hard.” 

Chambers USA

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