FRANKFURT, Nov 21 (Reuters) - The European Patent Office declared a contested mRNA patent owned by Moderna (MRNA.O) invalid, the office said on Tuesday, handing a win to BioNTech (22UAy.DE) and its partner Pfizer (PFE.N) in a patent dispute between the two coronavirus vaccine makers.

Moderna said in a statement that it disagreed with the office's decision and would lodge an appeal.

Shares in Moderna were down 2.3% in premarket trading on Wall Street after the decision was announced by BioNTech earlier on Tuesday.

BioNTech welcomed the decision, calling the patent office's decision "an important one, as we believe that this and others of Moderna's patents do not meet the requirements for grant and should never have been granted."

Moderna has sued BioNTech in Germany and other countries, alleging that it had copied mRNA technology that Moderna had patented well before COVID-19 emerged in 2019.

(This story has been corrected to clarify that the office made the statement on Tuesday, not the decision, in paragraph 1)

Source:- Reuters