Domain name restrictions, second-level registrations open to all Generic '.hk' domain categories; Specific third-level registrations require identity documents depending on varying rules for each sector.

Trademarks are assigned through the Intellectual Property Department under the supervision of the Government of the Hong Kong Special Administrative Region. Hong Kong is not a member of the Madrid Protocol. A trademark is valid for 10 years and may be renewed for further periods of 10 years each.