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Brad Liu primarily counsels clients around the globe on patent prosecution, design-around assistance, freedom to operate, patentability and validity opinion. He is a patent attorney with first-hand experiences before both the U.S. Patent and Trademark Office (USPTO) and the National Intellectual Property Administration of China (CNIPA). He has extensive experience with the Patent Cooperation Treaty (PCT) patent filing and prosecution process, as well as Track One Prioritized Examination under the USPTO.

Brad is actively involved with intellectual property litigation matters, especially in factual investigation, discovery and claim construction stages. He takes an active role to prepare foreign witnesses for U.S. depositions and trials. Experienced in both U.S. and Chinese legal systems, Brad counsels clients to understand litigation procedures and develop strategies for complex litigation in foreign jurisdictions. He also counsels clients regarding post grant proceedings under the USPTO.

Beyond his intellectual property practice, Brad provides counseling for the firm's Asian vendor clients, including establishing business in the U.S. He works closely with Calfee’s Business Restructuring and Insolvency practice group to protect Asian vendors’ interests and to maximize their recoveries in U.S. bankruptcy proceedings.

Prior to becoming an attorney, Brad worked for several years as a patent specialist for a Chinese intellectual property law firm and as a control engineer for a Chinese energy company before joining Calfee as a Law Clerk in 2013. He became an attorney in 2015, and he was elected Partner in 2022.

Honors & Recognitions

  • Best Lawyers: Ones to Watch, Litigation – Patent (2023-2024), Intellectual Property Law, and Litigation - Intellectual Property (2024)
  • Ohio Super Lawyers, Ohio Rising Stars, Intellectual Property (2022-2024)


J.D., University of Akron School of Law, 2015

M.B.A., Ashland University, 2011

B.E., Measurement Control Technology & Instruments, Harbin Institute of Technology, 2005



  • Handling IP matters for a publicly traded, Fortune 1000, global manufacturer, including drafting and prosecuting dozens of patent applications directed to technology of strategic importance to the client. Calfee routinely manages and assists with matters related to patent prosecution and IP strategy, management and strategy of patent and trademark portfolios, and advice on IP strategy and litigation. Calfee currently is handling three patent reissue matters that are key to the client's protection of critically important technology. Calfee also is handling "take-down" disputes related to infringers of the client's patents on the website.
  • 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.
  • Assisting an Asian manufacturing company with its U.S. patent and trademark filings while overseeing its entire global patent and trademark portfolios. Relatedly, Calfee represented the client in two separate International Trade Commission (ITC) investigations. At stake was whether the ITC would block the importation of several of the company’s products. Calfee obtained successful results for the client in both matters. Calfee also successfully defended the company on patent infringement allegations.
  • Serving as global Intellectual Property Lead Counsel for an Asia-based manufacturer, representing the client in district court litigation matters and prosecuting patent applications. The patent work for this client includes patent infringement matters filed in district courts in two states and the Federal Circuit as well as in six inter partes reviews before the Patent Trial and Appeal Board. Additionally, Calfee is the Lead Settlement Counsel for a global series of patent, trade secret, and antitrust cases against the client’s main competitor, and the Calfee team works closely with the client’s overseas counsel. These actions are being heard in a variety of forums in four countries.

Professional & Community

Professional & Community

  • Cleveland Intellectual Property Law Association, Member
  • Kathleen O’Malley American Inn of Court, Associate

News & Events


Licensed In

  • New York
  • Ohio
  • U.S. Patent and Trademark Office
  • Qualified in National Intellectual Property Administration of the People's Republic of China

Court Admissions

  • U.S. Court of Appeals for the Federal Circuit
  • U.S. District Court for the Eastern District of Arkansas
  • U.S. District Court for the Western District of Arkansas
  • U.S. District Court for the Northern District of Illinois
  • U.S. District Court for the Northern District of Ohio
  • U.S. District Court for the District of Colorado


  • English
  • Mandarin
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