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Dave has worked extensively on patentability, infringement, freedom to operate, and validity studies and has managed U.S. and international patent portfolios for a number of clients.

Dave has significant experience in a variety of mechanical and electrical technological fields, including locking devices, electronic access control systems, cabinet and garage storage systems, valves and fittings, lighting fixtures, medical devices, building materials, filtration systems, welding systems and product packaging.

He is an active member of the Cleveland Intellectual Property Law Association and has presented “patent basics” seminars for Cleveland State University and the Cuyahoga Small Business Development Center.

Dave was employed with the Swagelok Company as a technical service and product evaluations engineer for seven years. He joined Calfee in 2005 and became a partner in 2014.


J.D., magna cum laude, Case Western Reserve University School of Law, Order of the Coif, Law Review, 2005

M.B.A., Cleveland State University, 2000

B.S.M.E., University of Notre Dame, 1994



  • Serving as primary IP counsel for a publicly traded, Fortune 500, global manufacturing client and its operating companies with responsibility for the client's worldwide IP portfolio, including 1,000+ patent matters and 2,000+ trademark matters. With regard to clearance, Calfee provides right-to-use and non-infringement analyses and opinions. With regard to procurement, we provide patentability and registrability analyses and opinions. We also prepare, file, and prosecute patent and trademark applications. Calfee assists in all IP litigation the operating companies are involved in.
  • Serving as primary IP counsel for a publicly traded manufacturer and its operating companies with responsibility for more than 125 active patent and trademark matters for this client. With regard to clearance, we provide right-to-use and non-infringement analyses and opinions. With regard to procurement, we provide patentability and registrability analyses and opinions. Calfee also prepares, files, and prosecutes patent and trademark applications, and we represent the company in IP-related disputes.
  • Managing a publicly traded, Fortune 1000, multinational manufacturer's global trademark portfolio, including filing and prosecution, portfolio management, enforcement, and disputes. Calfee advises the client in patent preparation and prosecution matters, including strategy and filings. Calfee advises on patent enforcement matters, which are currently in pre-litigation investigation, including developing infringement analysis to stop infringement in markets with high-revenue product lines. Calfee also assists the client with a variety of other intellectual property counseling matters, including patent opinions, IP-related terms in agreements, cross-border enforcement, IP licensing, IP acquisition (particularly in China), and advising on best practices for protecting and harvesting intellectual property.
  • Drafting and prosecuting the client’s patent applications and assisting in patent portfolio development and research collaborations with academia for a multi-billion-dollar, international manufacturer. Calfee handles domestic and foreign patent litigation, patent prosecution, and IP strategy for the client, and we also provide management and strategy services for its patent and trademark portfolios and advise on IP strategy.
  • Serving as chief outside IP counsel for a multi-billion dollar, publicly traded, Fortune 1000, multinational holding company with multiple operating companies based in the U.S. and abroad. Calfee is responsible for all patent matters and assists many of the operating companies with the prosecution of patent applications, both in the U.S. and internationally. Calfee manages the U.S. trademark and patent work directly and supervises a network of foreign associates when action is required in foreign jurisdictions. Calfee also offers primary counsel on the impact of corporate reorganization efforts on the ownership and management of the IP of the operating companies. Calfee IP lawyers supervise most of the intellectual property due diligence related to the mergers and acquisition activity of the client. Calfee represents the company in several trade secret matters and other IP litigation matters.

Professional & Community

Professional & Community

  • Cleveland Intellectual Property Law Association, Member

News & Events


Licensed In

  • Ohio
  • U.S. Patent and Trademark Office
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