The 11th U.S. Circuit Court of Appeals has affirmed the felony convictions of a now-disbarred Florida lawyer convicted of conspiring with a Marietta, Ga., attorney to obstruct a Securities and Exchange Commission investigation.

The court upheld the convictions of Donald Frank Mintmire of Palm Beach, Fla., who was sentenced to 21 months in prison. His former law partner, Marietta lawyer A. Keith Logue, was given immunity by the government and testified against Mintmire.