Sen (Alex) Wang is an associate in Mayer Brown’s Chicago office and a member of the firm’s Intellectual Property practice and Technology & IP Transactions practice. Alex is a Certified Information Privacy Professional/United States recognized by the International Association of Privacy Professionals (IAPP). Alex focuses his practice on advising and counseling clients on transactional matters involving intellectual property (IP) and technology, leveraging his mechanical engineering background and several years of experience in high-stake patent litigation.

Alex regularly advises clients on IP, open source software, and data privacy issues in both large scale mergers and acquisitions (M&A) as well as standalone IP/technology-focused commercial transactions, including drafting, reviewing, and negotiating IP/software license agreements, IP/software co-ownership agreements, IP assignment agreements, non-disclosure agreements, joint venture/development agreements, software-as-a-service (SaaS)/platform-as-a-service (PaaS) agreements and associated service level agreements, master service/consulting agreements, and IP/IT/privacy provisions in M&A master transaction/purchase agreements; conducting in-depth due diligence review of IP, technology, and software assets in mergers and acquisitions ranging from billion-dollar pubic-to-public mergers, complex IP and technology carve-outs/divestures, and acquisition or sale of high-tech startups; and providing counseling on contract interpretation and risk assessment, prevention, and mitigation.

Alex’s patent litigation experience encompasses offensive and defensive proceedings on behalf of domestic and foreign clients in the federal district courts, the International Trade Commission (ITC), and the US Patent and Trademark Office. Alex has hands-on experience in all stages of litigation starting from pre-suit diligence and investigation to trial and post-trial briefing and everything in between, including crafting pleadings and written discovery, managing document production and review, conducting product inspections, preparing expert reports, taking and defending depositions of fact and expert witnesses, drafting various dispositive and non-dispositive motions and briefs, presenting oral arguments in front of judges, and examining witnesses at trial. Enabled by his mechanical engineering background, Alex has a quick grasp on a wide range of technologies and has litigated patents covering mechanical, electrical, and software arts in various industries, including 4G/5G telecommunications, wireless mesh network, Internet of Things, consumer electronics, medical device, clinical lab automation systems, electronic cigarettes, and motion furniture.

In addition to his transactional and litigation practice, Alex has experience evaluating clients’ products and providing freedom-to-operate opinions. Early in his career, Alex also drafted and prosecuted patent applications protecting technologies such as drug-eluting stents, patient monitoring and drug titration system, commercial deep fryer, industrial filters, freight tie-down devices, and high-pressure hydraulic valves.

Born and raised in mainland China, Alex is a native mandarin speaker and received his Chinese law graduate from Peking University Law School and undergraduate degree from Harbin Institute of Technology. Alex holds the Legal Professional Qualification Certificate issued by the Chinese Ministry of Justice.

Spoken Languages

  • Chinese
  • English


  • Representing a leading Chinese laser projector manufacturer as the plaintiff in an inventorship dispute (E.D. Va.).
  • Defending a mixed group of US and Chinese entities in a patent infringement dispute involving motion furniture (M.D.N.C.).
  • Represented a leading Japanese consumer electronics manufacture as the plaintiff in a patent infringement dispute involving smartphones and tablets (E.D. Tex.).
  • Represented a leading US domestic outdoor furniture manufacturer as the complainant in a Section 337 investigation (ITC).
  • Defended a leading Chinese active optical cable manufacturer in a Section 337 investigation (ITC).
  • Defended one of the largest privately held medical device manufacturers in a multi-patent infringement dispute involving hemostatic clips brought by a direct competitor (D. Del. & PTAB).
  • Defended a Fortune 500 corporation in a patent infringement dispute involving more than a dozen patents covering electronic cigarettes brought by a direct competitor (M.D.N.C. & PTAB).
  • Defended a Japanese corporation and its US subsidiary in a patent infringement dispute involving clinical lab automation software and hardware brought by a direct competitor (N.D. Ill.).


University of Minnesota Law School, JD
Managing Editor, Minnesota Journal of Law, Science & Technology

Peking University Law School, Juris Master, Intellectual Property Law Certificate

Harbin Institute of Technology, BEng, Mechanical Design, Manufacturing, and Automation


  • Illinois
  • District of Columbia


  • US District Court for the Northern District of Illinois
  • US Court of Appeals for the Federal Circuit


  • American Intellectual Property Law Association
  • International Association of Privacy Professionals