The story
AT&T announced the creation of the UNIX Software Operation (USO) – a separate and distinct AT&T business unit responsible for the development, marketing, and licensing of UNIX System V software – in January 1989. This was done, as a subsequent press release stated, "in order to separate AT&T's UNIX System source code business from its computer systems business," the latter a reference to AT&T Computer Systems. USO included the AT&T Data Systems Group organizations responsible for UNIX product planning and management, licensing, and marketing. Peter J. Weinberger was named chief scientist of USO while also retaining his job in the computing science research center at Bell Labs; no other Bell Labs assets were transferred to USO. The head of USO was Larry Dooling, who had been a vice-president in sales and marketing in the AT&T Data Systems Group.
Unlike the original Unix work, which had been done in the Bell Labs facility in Murray Hill, USO and the commercialization work was done a few miles away in Summit, New Jersey. This AT&T Bell Labs location was known as SF for Summit Facility.
UNIX System Laboratories, Inc., came into being as a separate subsidiary of AT&T in November 1989 and was assigned all U.S.-based AT&T Unix and USO assets.
However USO continued to operate as USO until June 1990, when the reincorporation of AT&T's European and Asian Unix business operations as wholly owned subsidiaries of USL was completed. At that point the UNIX Software Operation was publicly rebranded as UNIX System Laboratories.
Again, a point of emphasis was to separate the Unix-based business from AT&T's hardware-based business. The subsidiaries were known as UNIX System Laboratories Europe, Ltd., sited near Ealing Broadway in London, and UNIX System Laboratories Pacific, Ltd., located in Shiba, Tokyo.
Dooling was named the initial president of USL, continuing from his position at USO.
These organizational changes were taking place in the context of the open systems movement and the ongoing Unix wars. In consequence, the pro-AT&T side Unix International (as opposed to the anti-AT&T side Open Software Foundation) declared that "In the last 18 months AT&T has made good on its commitment to treat UNIX System as the industry asset it is and to open the UNIX System V development process to the entire industry."
From Wikipedia’s article on Unix System Laboratories, shared under CC BY-SA 4.0.4
