As stipulated, any changes which likely affect the Trademark Registration, such as change of name and/or address, merger of the trademark owner should be recorded with the TM Office as soon as practicable.
For recordal of change of name and/or address of the trademark owner, the following documents are required at the time of filing:
i) A Power of Attorney, which is simply signed by the trademark owner. No notarization and/or legalization is required;
ii) A notarized Declaration of change of name and/or address by the trademark owner, or Certified true copy of the legal document evidencing the change of name and/or address;
iii) Original certificate of trademark registration(s), for endorsement purpose.