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Daniel J. "Dan" McMullen

The Calfee Building, 1405 East Sixth Street Cleveland, Ohio 44114-1607
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Calfee, Halter & Griswold LLP

Years In Practice

Phone Number (216) 622-8656

Dan McMullen is a Partner with Calfee's Intellectual Property practice group and leads the firm’s Information Technology practice. He provides skilled counsel to address clients’ legal needs regarding computer software and content development, licensing, cloud computing and SaaS subscriptions, hosting and service level agreements, outsourcing, data rights, privacy, cybersecurity, blockchain and other online/Internet, website and e-commerce matters.

Dan also handles intellectual property matters across traditional business, new media and entertainment sectors. He represents public and closely held business clients in all forms of intellectual property negotiations, and occasionally, dispute resolution, including patent, copyright and trademark infringement actions, as well as complex computer system litigation.

He uses his expertise in intellectual property law, contracting practices and dispute resolution techniques to help clients – creators and users, buyers and sellers, licensors and licensees – to protect and grow their businesses.

For the past several years, Dan has authored (as successor to the late Professor Raymond Nimmer) the LEXIS-NEXIS treatise, The Law of Electronic Commercial Transactions. He has published numerous articles on intellectual property and information technology matters, including one on the Defend Trade Secrets Act of 2016 in Intellectual Property Magazine and "Supreme Court Upholds ‘First Sale’ Doctrine," Impact IP, an Intellectual Property Law Newsletter, in March 2013.

Recognized for his expertise, Dan participated in a September 2018, invitation-only Congressional roundtable on “Legislating Certainty for Cryptocurrencies,” that addressed the regulatory treatment of blockchain tokens.

Active in the community, Dan has served as an adjunct faculty member at both Case Western Reserve University School of Law and Cleveland-Marshall College of Law, where he has taught courses on intellectual property and Cyberlaw. Since being appointed by the Chief Judge in 2002 (and subsequently reappointed), he has served on the Panel of Neutrals for the United States District Court for the Northern District of Ohio, in which role he has mediated numerous technology and intellectual property disputes.

Dan has served on the board of OHTec (formerly NEOSA) for many years, on the Government Affairs Council of the Greater Cleveland Partnership for several years and was a long-time board member (and former chair) of the Greater Cleveland Film Commission. He is a member of the Cleveland Metropolitan and American Bar Associations and a graduate of Leadership Cleveland. 

Before law school, Dan worked as a systems analyst for General Motors. He served as a law clerk to Chief U.S. District Judge Frank J. Battisti, was admitted to the Attorney General’s Honors Program and practiced as a trial attorney with the U.S. Justice Department.

He later served as Director of the Office of School Monitoring and a Special Master for the U.S. District Court for the Northern District of Ohio. He now serves on that Court’s ADR panel and has mediated multiple software and intellectual property disputes to settlement. 

Dan began his tenure with Calfee in 1994 and became a partner in 1998.

What legal services does this lawyer offer?
  • The Best Lawyers in America©, Copyright Law (2020-2023) and Information Technology Law (2022-2023)
  • Ohio Super Lawyers (2013-2017)
  • Martindale-Hubbell, “AV Preeminent Rating”
  • Corporate Counsel’s “Top-Rated Lawyers Guide to Intellectual Property Law” (2012)
Harvard University, J.D.
Graduated 1982
Harvard University, B.A.
Graduated 1978
Contact Details and Office Locations
The Calfee Building, 1405 East Sixth Street
Cleveland, Ohio 44114-1607
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