Microsoft has agreed to pay VirnetX another $23 million to settle an expanded patent dispute between the two companies, the pair announced on December 19.

Microsoft and VirnetX signed an amended settlement and license agreement on December 17 that settled their pending patent disputes, according to the press release announcing the deal.

This isn't the first time Microsoft tangled with VirnetX. Microsoft paid VirnetX $200 million in 2010 as part of a networking-patent violation case.

In 2013, VirnetX sued Microsoft again in East Texas for more alleged patent violations.The 2013 case asserted that Microsoft infringed on VirnetX patents with Skype and products that integrated with Skype, such as Lync.

VirnetX is in the patent-licensing business. It also initially won in 2013 a $368 million verdict against Apple, which was later overturned