Jack Ma, chairman of Alibaba Group Holding Ltd, attends a joint meeting on strategic cooperation with the city government of Hangzhou, capital of Zhejiang province.XU KANGPING/CHINA DAILY

At least 3 members quit in protest over Alibaba's recent membership

Jack Ma, chairman of Alibaba Group Holding Ltd, has canceled a speech at an anti-counterfeiting conference in the United States after the trade group behind it suspended the e-commerce giant's recently gained membership.

Alibaba has been dogged for years by accusations that its online shopping platforms were conduits for counterfeiters and critics say it has not done nearly enough to stop the problem.

At least three members of the Washington-based International Anti-Counterfeiting Coalition, including board member Tiffany & Co, quit the group in protest and others threatened to leave after Alibaba was admitted as a member in April.

On Friday, the IACC suspended the new category in which Alibaba was admitted, effectively terminating its membership.

"Given the IACC's desire for additional time to reflect upon the viability of its general membership category, Alibaba feels it best that Jack Ma postpone his appearance," Jennifer Kuperman, head of international corporate communications, said in a statement.

Alibaba Group President Michael Evans will speak at the conference in Orlando, Florida instead.

Kuperman reiterated Alibaba's stance that it is "firmly committed to the protection of intellectual property rights and combating counterfeits".

On Tuesday－the same day as the cancellation－Ma had lunch with US President Barack Obama at the White House, an Alibaba source with knowledge of the situation said.

China's biggest e-commerce firm has pledged to fight fake goods and has hired an army of employees to root them out, but many brands say the problem is still widespread, particularly on the hugely popular shopping site Taobao.

In a letter to the IACC explaining its decision to leave the group, luxury brand Michael Kors called Alibaba "the largest marketplace for counterfeit merchandise the world has ever seen" and blasted the IACC for providing "cover to our most dangerous and damaging adversary".

Last week Taobao said it was tightening controls on the sale of luxury goods, requiring sellers to show proof of authenticity as a way to try to combat the sale of fakes.

People's Daily said this month Chinese authorities would launch a campaign to clean up e-commerce, targeting trademark violations, counterfeit and poor quality products, in a move potentially affecting Alibaba as well as rivals JD.com Inc and Baidu Inc.