More support easing vaccine patent rules, but hurdles remain

French President Emmanuel Macron talks to the press as he visits a giant vaccination center against the Covid-19 during its inauguration at Porte de Versailles convention centre in Paris, Thursday, May 6, 2021. (Christophe Archambault, Pool Photo via AP)

FILE - In this April 8, 2021, file photo, a Northwell Health registered nurses fills a syringe with the Johnson & Johnson COVID-19 vaccine at a pop up vaccination site at the Albanian Islamic Cultural Center in the Staten Island borough of New York. The Biden administration on Wednesday, May 5, joined calls for more sharing of the technology behind COVID-19 vaccines to help speed the end of the pandemic, a shift that puts the U.S. alongside many in the developing world who want rich countries to do more to get doses to the needy. (AP Photo/Mary Altaffer, File)

GENEVA — Several world leaders Thursday praised the U.S. call to remove patent protections on COVID-19 vaccines to help poor countries obtain shots. But the proposal faces a multitude of hurdles, including resistance from the pharmaceutical industry.