Domnern Somgiat & Boonma Law Office Limited

Address: 719 Si Phraya Road, Bangrak, Bangkok 10500, Thailand.
Phone: +66-2-639-1955

Domnern Somgiat & Boonma is a law firm specialising in intellectual property laws which provide both IP prosecution and IP enforcement services. It currently has five partners consisting of four attorneys-at-law admitted to the Thai Bar, namely Rutorn Nopakun, Chakrapat Mongkolsit, Apiwatt Kongsoowan and Nathapong Tongkaew, and a patent attorney with both legal and technical backgrounds, Prabjote Busdee. It has 130 full-time members (including the partners) and 76 outside experts from various technical fields with whom it consults regularly on technical issues. About 23% of trademark applications filed by foreign companies in Thailand and 50% of patent applications filed by foreign companies in Thailand are handled by the firm. The firm also regularly handles trademark and patent work through associates in Vietnam, Laos, Cambodia and Myanmar.


The firm can arrange police raids against manufacturers, distributors and retailers of counterfeit goods and is capable of handling criminal and/or civil proceedings in court. For police raids, the firm has a team consisting of three raid co-ordinators. It also has good relationship with the Economic Crime Division (ECD, the police unit specifically charged with enforcing IP rights), and the Department of Special Investigation (DSI, a non-police law enforcement agency charged with handling, among other things, large, high-profile IP enforcement cases).


The firm also has experience in handling customs seizure cases. Our Customs coordinators regularly respond to requests from the Thai Customs Department to inspect goods believed to be counterfeit being seized at Customs and, if possible, file formal complaints against importers and/or exporters.


The firm has an IP litigation team consisting of five attorneys at law specialising in handling court cases relating to IP issues.


The firm has represented the following clients:


Automobiles: BMW, GM, Honda, Mazda, Lamborghini, Mercedes-Benz


Clothing and Leather Goods: The Polo/Lauren Company, Paul Smith, Stussy, H.D. Lee Company, Wrangler, O’NEILL, Onitsuka Tiger, The North Face, Calvin Klein, Salvatore Ferragamo, Sergio Rossi, Chanel, Matsuda & Co., Nike, Puma and Under Armour


Computer Software and Technology: Adobe, Facebook,, Netflix and VIVO


Cosmetics and Personal Care Products: Beiersdorf, Johnson & Johnson, THEFACESHOP, Shiseido


Electrical Products, Home Appliances and Power Tools: Makita, Stanley Electric and STIHL


Electronics: Sony, ICOM, IBM and H-P


Food and Beverages: Nestle, McDonald’s, Kellogg’s and Red Bull


Pharmaceutical Products: Eli Lilly, GlaxoSmithKline, Pfizer and Takeda

Team Members

Rutorn Nopakun

Partner / Managing Director

Chakrapat Mongkolsit

Partner / Managing Director

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