ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,775,525, issued on Oct. 27, was assigned to Dropbox Inc. (San Francisco).

"Restoring a directory to a state prior to a past synchronization event" was invented by Pranav Vishnu Ramabhadran (Redwood City, Calif.), Ken Park (Pacifica, Calif.), Wes O'Haire (Dublin, Calif.), Raveesh Nayar (San Bruno, Calif.), Helen Lu (San Francisco), Grant Mathews (San Francisco), Sam Keller (San Francisco), Niklas Nordlof (San Francisco), Marian Oman (San Francisco) and Julia Weingardt (Austin, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present technology pertains to restoring a directory to a state prior to a past synchronization event. A content management...