but to decrease the time needed to compress files. Salient Software would license Stac's acceleration technology for use in their NuBus DoubleUp and PDS Bullet cards for the Macintosh, though they would use Salient's own DiskDoubler software. After 1994 At some time prior to 1996, the company relocated its main office from Carlsbad to Carmel Valley, in San Diego, and maintained a programming group in Estonia. After settling the lawsuit with Microsoft, Stac attempted to expand its product portfolio in the utility software segment by adding additional storage and communication titles through internal development and acquisition. The company scrambled to replace the revenues lost after the market for hard drive compression software collapsed with the inclusion of DoubleSpace in MS-DOS and the rapid decline in hard disk cost per megabyte. Using the funds from its IPO (1992) and the settlement with Microsoft, Stac acquired a remote desktop software product called "ReachOut". It acquired a server image backup product, "Replica", and internally developed a network backup product for workstations and laptops, and marketed this product first as "Replica NDM" and later as "eSupport Essentials". Much of the technology pioneered in Stac's network backup offering ultimately found its way into today's online backup solutions. Meanwhile, Stac's original chip business continued to grow. In order to realize shareholder value, its chip subsidiary called Hifn, was spun off in 1998 in a primary public offering. Stac then renamed the remaining utility software company to "Previo", and repositioned itself as a help desk and support organization tool provider. This effort was pursued while the dot-com bubble was bursting, and in 2002 management elected to take the unusual step of selling Stac's remaining technology assets (to Altiris) and returning its remaining cash to shareholders before dissolving. Controversy Microsoft lawsuit In 1993, Microsoft released MS-DOS 6.0, which included a disk compression program called DoubleSpace. Microsoft had previously been in discussions with Stac to license its compression technology, and had discussions with Stac engineers and examined Stac's code as part of the due diligence process. Stac, in an effort led by attorney Morgan Chu, sued Microsoft for infringement of two of its data compression patents. Meanwhile, Microsoft had filed an injunction against Stac to prevent the company from selling its Stacker 3.1 software for Windows and DOS, attracting claims from Stac representatives that with a licensing deal having been made with rival DOS vendor, Novell, and with Microsoft