An attorney who won an $8.6 billion award in an Ecuadoran court against Chevron Corp. over pollution of the Amazon rain forest later found to be obtained by coercion, fraud and bribery has lost his law license.

Steven Donziger is suspended from practicing law in New York state until further notice based on findings made in March 2014 by a federal trial court, a New York appeals court said July 10.

The 2014 findings of U.S. District Judge Lewis Kaplan are “uncontroverted evidence of serious professional misconduct which immediately threatens the public interest,” the appeals court said.

This is perhaps...