China has slowed cooperation with the United States on fighting product piracy since Washington complained to the World Trade Organization on the issue earlier this year, American officials said on Oct. 24.

“We’ve seen increased cooperation in some areas but we’ve seen cooperation in other areas slow. We don’t think that’s the right way forward,” said U.S. Undersecretary of Commerce Jon W. Dudas, in Beijing for an American Embassy forum on intellectual property.