In January 2013, NVE filed a patent infringement lawsuit against Everspin Technologies. A few months later, Everspin filed a patent lawsuit of their own against NVE.
Yesterday NVE announced that the two companies agreed to drop both lawsuits and will not assert the patents in those suits against each other in the future. NVE says that this agreement (which seems to be a appointment's to their shareholders) is limited to the patents in the 2012 lawsuits.
Disclaimer: the author of this post holds some shares in NVE