The widow of an attorney who committed suicide while taking a generic version ofGlaxoSmithKline LLC’ s antidepressant Paxil lost her attempt to have a federal appeals court revisit a decision tossing a $3 million jury verdict against the drugmaker.

The U.S. Court of Appeals for the Seventh Circuit Sept. 20 denied Wendy Dolin’s request for a rehearing by the three judge-panel and for reconsideration by the full court.

Dolin’s husband, Stewart Dolin, was a partner at Reed Smith in...