Subject to the provisions of this paragraph and of section thirteen of this Act, the validity of the original entry of a trade mark on the register of trade marks existing at the commencement of the [5 Edw. 7. c. 15.] Trade Marks Act, 1905, or on any of the registers of trade marks kept under previous Acts that were deemed part of the same record as the last-mentioned register, shall be determined in accordance with the Acts in force at the date of such entry, and any such trade mark shall retain its original date, but for all other purposes it shall be deemed to have been registered under the Trade Marks Act, 1905.

No trade mark which was on the register at the commencement of the Trade Marks Act, 1905, and which under that Act was then a registrable trade mark, shall be removed from the register on the ground that it was not registrable under the Acts in force at the date of its registration.

No trade mark which was on the register at the commencement of the Trade Marks (Amendment) Act, 1937, and which, having regard to any amendment by that Act of the Trade Marks Act, 1905, or of the [9 & 10 Geo. 5. c. 79.] Trade Marks Act, 1919, whether as respects limitations that might be imposed on registration or as respects any other matter, was then a registrable trade mark under the Trade Marks Acts, 1905 to 1937, shall be removed from the register on the ground that it was not registrable under the Acts in force at the date of its registration.

Nothing in the Trade Marks (Amendment) Act, 1937, shall be taken to have invalidated the original registration of a trade mark that immediately before the commencement of that Act was validly on the register.

Nothing in section thirty-six of the Trade Marks Act, 1905, or in the Trade Marks (Amendment) Act, 1937, shall be construed as having subjected any person to any liability in respect of any act or thing done before the commencement of those Acts respectively to which he would not have been subject under the Acts then in force.