The U.S. District Court for the Northern District of California issued the temporary restraining order against Zoom.
Zoom alleges RingCentral engaged in unfair competition and false designation of origin, breach of contract, and violation of the California Business and Professionals Code.
The lawsuit seeks an injunction barring RingCentral from using its trademark, and for the company to turn over all profits and gains from the use of its trademarks.
Zoom has been trying to terminate its agreement with RingCentral since last summer. However, the court ruled the agreement remains in place. Furthermore, it precludes Zoom from imposing technical measures to block RingCentral and its customers access to Zoom services.