The court ruled Thursday that Brian Reid's discrimination suit could go to trial, rejecting a lower court's decision that there wasn't enough evidence.
Reid, a former associate professor at Stanford University, sued Google in 2004, after losing his job as director of operations. He was 54. Reid alleges he was told he wasn't a good "cultural fit" at the Mountain View-based company.
The justices said the trial judge should've considered alleged comments by Reid's co-workers referring to him as an "old guy" and "fuddy-duddy."
Google, which denies the allegations, said it looks forward to demonstrating in court "the legitimate, nondiscriminatory reasons" Reid was fired.