Are the entries still correct?
Monitor your trade mark registration every time you introduce a new product under an existing trade mark or modify its appearance. Does the new product fall under the original classes of goods and services? If not, you can make a new application for additional classes of goods and services.
The goods and services classes can be restricted anytime by submitting a written application.

We advise you to have any address changes, licensing agreements, and, above all, transfers of rights entered into the register. This is particularly beneficial in case of a conflict because anyone who is well-intentioned can assume that the register is correct.