Mark W. McDougall


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

Tel: 216.622.8524


Co-Chair of the Intellectual Property practice group, Mark knows how to secure valuable rights that protect his clients’ investment and competitive advantage in the market. He also helps his clients monetize and enforce their intellectual property rights and regularly defends clients against the risks associated with their competitor’s intellectual property.

A substantial portion of Mark’s practice is devoted to litigation matters on behalf of both plaintiffs and defendants. He has experience in both state and federal court, including all facets of district court litigation and appeals to the Federal Circuit. Mark has been lead counsel in multiple patent cases securing favorable outcomes for his clients. He also regularly handles inter partes review proceedings before the Patent Trial and Appeal Board.

Mark’s experience helps him find creative business solutions to his clients’ intellectual property related issues. He leans on his litigation experience when asked to provide counsel on patent clearance and due diligence matters, including patent portfolio analyses, validity and infringement opinions. Mark also utilizes his engineering experience to help businesses develop new products, strengthen their intellectual property positions for product lines and build the overall value of their portfolio.

Calfee has one of the largest Intellectual Property and Information Technology practices in a general practice firm within the Midwest. The attorneys in our IP group have broad experience and a deep bench in prosecution, litigation, opinions, IP business strategy and counseling.

Of the approximately 40 skilled attorneys in Calfee’s Intellectual Property practice, more than 30 attorneys are registered to practice before the U.S. Patent and Trademark Office. We have more than 18,000 patents and trademarks on our docket, 11,000 of which are international.

Our Intellectual Property practice develops and protects the intellectual property and technology assets of a broad spectrum of clients. We conduct patent and trademark searches, prepare and prosecute U.S. and international patent, trademark, and copyright applications, and work with clients to maintain and enforce issued patents and registered trademarks. We also handle intellectual property disputes and litigation, including before the Patent Trial and Appeal Board and appeals to the Court of Appeals for the Federal Circuit. We litigate and help resolve issues of infringement (patent, trademark and copyright), trademark oppositions and cancellations, Inter Partes Reviews (IPRs) of patents, and trade secret and unfair competition violations.

We provide corporate counseling on issues of licensing agreements; assignments, security interest and confidentiality and nondisclosure agreements; trade secret protection; and patent and trademark infringement.

Serving a national and international client base comprised of both established and entrepreneurial enterprises, Calfee provides fully integrated, high-quality legal services throughout the United States and around the world. Our attorneys work with clients to develop strategies for utilizing the client’s intellectual property, protecting trade secrets, and for dealing with adverse claims of patent, trademark and copyright infringement.

Calfee, Halter & Griswold LLP is a full-service, corporate law firm with attorneys located in Cleveland, Columbus, Cincinnati, Indianapolis, New York and Washington, D.C. As a founding member of Lex Mundi, we also offer international representation through a network of independent law firms with 22,000 attorneys in more than 125 countries.

Since 1903, our mission has been to provide meaningful legal and business counsel in matters that are critical to the success of our clients. Our lawyers routinely represent a wide spectrum of private and public organizations – from emerging companies to Fortune 500 corporations – as well as government entities, nonprofit organizations, trade associations and individuals.

Calfee is consistently ranked one of the top law firms in Ohio and continues to receive recognition, both nationally and regionally, from a number of leading industry publications.

Mark McDougall cochairs the team’s IP practice and represents companies from a range of industries in both contentious and noncontentious patent matters. “He gets immersed in the facts and provides detailed guidance. “Mark is a smart patent lawyer.”
Chambers & Partners