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San Chaithiraphant

Senior Associate


San Chaithiraphant is a senior associate in Tilleke & Gibbins’ intellectual property group, specializing in patents for technological products.

Within the firm’s Bangkok IP team, San advises clients on a range of complex patent issues, including specification drafting, registration procedures, portfolio management, and more. He specializes in representing clients whose businesses focus on technology, e-commerce, and digital innovations.

San was ranked among the top of his batch in the Thai Bar Association examinations, and also graduated with distinction with an LLM, focused on intellectual property and digital economy, from the University of Glasgow. He has a multidisciplinary background with advanced degrees in engineering and chemical engineering.


  • Conducted utility and design patents’ freedom-to-operate analyses, as well as infringement analyses, on behalf of clients in a wide range of industries.
  • Filed and successfully registered patents, petty patents, and designs with the Thai Department of Intellectual Property.
  • Represented clients in filing responses to office actions, oppositions, and cancellations to strengthen and defend their valuable patents.
  • Conducted regulatory due diligence for acquisitions by a number of multinational clients.
  • Advised on laws and regulations related to medical devices, drugs, and controlled foods.
  • Assisted clients in life sciences regulatory compliance through every stage of their products’ life cycles.
  • Supported clients’ market entries by advising on product promotional activities in a range of media.
  • Reviewed regulatory service agreements for several global medical device companies.
  • Provided advice on complex issues involving multiple fields of law, including contracts, intellectual property, regulatory affairs, computer crimes, and data protection.






    LLM, University of Glasgow

    LLB, Ramkhamhaeng University

    MChE, King Mongkut’s University of Technology Thonburi

    BEng, Chulalongkorn University


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