BERLIN — The head of German pharmaceutical company BioNTech said Monday that there is no need to waive patents on coronavirus vaccines because manufacturers will be able to produce enough shots to supply the world over the coming year.

Ugur Sahin, the chief executive of BioNTech, rejected the U.S.-backed proposal to temporarily lift some intellectual property rights for vaccines in order to boost global supply during the ongoing pandemic.

In a call with investors announcing the company’s first-quarter net profit of $1.37 billion, Sahin said BioNTech and its U.S. partner Pfizer had already delivered vaccines to more than 90 countries and more than doubled its forecast production capacity for the year.

“We have now scaled the manufacturing capacity up to 3 billion doses in 2021, and more than 40% of these doses are expected to go to middle- and low-income countries,” Sahin said.

Waiving patents would not ease supply shortages in the coming months, he said, citing the complexity of producing the mRNA-based shot his company developed last year.

Sahin said his company is working to further expand its manufacturing network with its own sites and through cooperation with other manufacturers to ensure greater supply while maintaining the quality of the vaccine. But he also noted that rival manufacturers have their own shots either on the market already or in the pipeline.

“We believe, together with the other vaccine developers, in the next nine to 12 months, that there will be more than enough vaccine produced, and there is absolutely no need for waiving patents,” he said.