What is the time limit to file an appeal against a decision of the Registrar?

Section 91(1) of the Trade Marks Act, 1999, as amended by the Tribunals Reforms Act, 2021, lets a person aggrieved by an order or decision of the Registrar appeal to the High Court "within three months from the date on which the order or decision" is communicated to him.

One-, two- and six-month periods have no basis in the section; one month (extendable by one month) is the period for seeking review before the Registrar.