Without comment, the court denied a request by units of Dr. Reddy's Laboratories Ltd. and Teva Pharmaceutical Industries Ltd. for the justices to force a lower appeals court to reconsider the case, Bloomberg reported.
An appeals court ruled in Lilly's favor in December, upholding the victory the company won in spring 2005 before a federal trial judge.
Zyprexa sales totaled $4.4 billion worldwide last year. Lilly's patent on the drug runs until 2011. The drug is used to treat bipolar disorder and schizophrenia.