(BBC) – The US has thrown its support behind a move at the World Trade Organization (WTO) to temporarily lift patent protection for coronavirus vaccines.
India and South Africa proposed the plan, which they said would increase vaccine production around the world.
But drugs manufacturers argue it may not have the desired effect.
US Trade Representative Katherine Tai said that “extraordinary times call for extraordinary measures”.
Ms Tai said the US would now embark on negotiations at the WTO to try to secure the waiver, but warned this could take time.
One hundred of the WTO’s 164 states are said to be in favour, and a panel on intellectual property is expected to discuss the issue next month.
India and South Africa were the leading voices in a group of about 60 countries which for the last six months has been trying to get the patents on vaccines set aside.
However, they met with strong opposition from the previous US administration of Donald Trump, the UK and the EU. Mr Biden had proposed a waiver during the 2020 presidential election campaign.