No,Gibraltar is not a part of the European Union pursuant to the amendment of the Trademarks Act wef from 01.01.21.
The authority entrusted with the responsibility of registration of trademarks under the Trade Marks Act ("the Act") and the Trade Mark Rules is the Companies House Gibraltar.
The privileges and rights shall be determined from the date of registration in the United Kingdom and shall continue in force for so long as the registration in the United Kingdom remains in force in respect of the goods for which the trade mark is registered in Gibraltar.
The trademarks which can be registered in Gibraltar in furtherance of the amendment of 2021 are International trademarks registered under the Madrid Protocol, Comparable trade marks (EU), and Comparable trade marks (UK ).
The documents required for filling an application for trademark registration in Gibraltar are - Application for Registration of a trademark (Form 1), a Certified representation of the trade mark, a Certificate of the Comptroller of the UK Patent Office (under his title of Registrar of Trade Marks) giving full particulars of the registration of the trade mark and two prints of the trade mark if the trade mark to be is a registered device.