U.S. Patent Office Issues Notice of Allowance on Key Patent

December 20, 2021- International Battery Metals Ltd. (the “Company”) (CSE: “IBAT”,
OTC: RHHNF, FSE: 8RE) the Company announced today that it has received a notice
of allowance for its mobile lithium extraction patent application from the United States Patent Office.

This is a key patent for the Company and the Company is in the process of prosecuting additional patents to reinforce and protect its proprietary technology. Dr. John Burba stated that “this is a major milestone for the Company as it moves forward in building and deploying its first mobile lithium extraction unit in the forthcoming months”.

IBAT is an advanced technology company focused on lithium brine extraction. The
company is applying its intellectual property into the current building of its first mobile lithium extraction unit.

ON BEHALF OF THE BOARD
“Dr. John Burba”
Dr. John Burba, President CEO & Director
Tel: (778) 939-4228

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This news release may contain assumptions, estimates, and other forward-looking statements regarding future events. Such forward-looking statements involve inherent risks and uncertainties and are subject to factors, many of which are beyond the Company's control that may cause actual results or performance to differ materially from those currently anticipated in such statements.

Forward‐looking and cautionary statements- This press release shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any state in the United States in which such offer, solicitation or sale would be unlawful. The securities referred to herein have not been and will not be registered under the United States Securities Act of 1933, as amended, and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements. This release may contain statements within the meaning of safe harbour provisions as defined under securities laws and regulations.

This release may contain certain forward‐looking statements with respect to the financial condition, results of operations and business of the Company and certain of the plans and objectives of the Company with respect to the same. By their nature, forward‐looking statements involve risk and uncertainty because they relate to events and depend on circumstances that will occur in the future and there are many factors that could cause actual results and developments to differ materially from
those expressed or implied by these forward‐looking statements.