What is honest concurrent use, and how does it serve as an exception to relative grounds for refusal of registration" under Section 11 of the Trade Marks Act, 1999?

Honest concurrent use refers to a situation where two or more traders independently and bona fide use identical or deceptively similar trademarks in relation to the same or similar goods or services for a substantial period of time, without any intention to deceive or derive unfair advantage from the reputation of the other. The doctrine recognises the commercial reality that similar marks may come to be used honestly and simultaneously by different proprietors. Honest Concurrent Use as an Exception to section 11 of the Trade Marks Act, 1999 To all the relative grounds of refusal mentioned under Section 11 of the Trade Marks Act, 1999 allows one exception in Section 12. As per Section 12 in the case of honest concurrent use, or of other special circumstances which make it proper so to do, the Registrar may permit the registration of trade marks which are identical or similar in respect of the same or similar goods or services, irrespective of the fact that any such trade mark is already registered or not. This is done so if in the opinion of the Registrar it is proper so to do in favour of more than one proprietor of trade mark. In such an event the Registrar is empowered to impose such conditions and limitations, as he deems fit. The provisions establish the superiority of trade mark rights acquired by use. Such registration may be allowed subject to conditions or limitations, such as: Territorial restrictions Manner of use Disclaimer or differentiation Factors Considered for Honest Concurrent Use Courts and the Registrar generally consider: Honesty of adoption of the mark Duration and extent of use Degree of confusion likely to arise Nature of the goods or services Relative inconvenience to parties and public interest Honest concurrent use acts as an equitable exception to the relative grounds for refusal under Section 11. By allowing registration under Section 12, the Trade Marks Act balances the rights of prior proprietors with commercial fairness and prevents hardship to traders who have honestly built goodwill under similar marks.