One year and two months after Dr. Widukind Lenz testified at the Thalidomide trial in Germany, the court decided his testimony could not be used. The Grünenthal defence lawyers had argued that Lenz was not as unbiased as an expert witness should be.
Source: Widukind Lenz: The History of Thalidomide. Extract from a lecture given at the 1992 UNITH Congress.