That's according to a court filing the companies made Friday in the 2-year-old case before Judge Lucy Koh in the U.S. District Court in San Jose.
(Read more: Apple, Samsung CEOs agree to mediation)
While the two sides said they remain willing to work through a mediator, the lack of a settlement points them toward a trial in March.
The world's top two smartphone makers have waged legal battles over mobile devices since Apple accused Samsung of copying the iPhone and the iPad in 2011. Later, Samsung claimed Apple used its technologies without permissions, expanding battles to courts in Asia, Europe and North America.
—The Associated Press