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A spokesperson for the German government said it would cause "severe complications," per Bloomberg.
Experts have said lifting vaccine patents may not be that effective in easing global shortages.
Germany pushed back Thursday against President Joe Biden's support for a patent waiver on COVID-19 vaccines, one of the first rich nations to explicitly oppose the move.
A spokesperson for the German government said waiving patents would cause "severe complications" for vaccine production in an emailed statement to Bloomberg.
The US announced its support for the move on Wednesday, following pressure from more than 100 developing-world countries at the World Trade Organization (WTO).