Western Digital has signed a definitive royalty-bearing agreement with Samsung Electronics to renew the cross-license of the two companies' semiconductor patent portfolios.

The terms of the renewed agreement are retroactive to the end date of the prior agreement, which expired on August 14, 2016. The renewed agreement will run through December 31, 2024.

The agreement includes rights to each party's patents broadly covering multi-level cell flash memory and flash storage systems. The original agreement, which dates back to 1997 and had been renewed twice before, had permitted Samsung to use patented flash memory technologies invented by SanDisk, which Western Digital acquired in May 2016.

The agreement enables Western Digital to continue to focus on developing and exploring uses for next-generation flash technology. "This agreement allows Western Digital to continue to realize the value of the SanDisk acquisition and extends the company's mutually beneficial relationship with Samsung," said WD.

Financial terms of the renewed agreement were not disclosed.