Shell and Slate Software and Ben Weiss have filed suit against Adobe on “numerous allegations, including misappropriation of trade secrets and breach of contract concerning the Healing Brush texture-cloning tool included in Adobe Photoshop 7.0.” The lawsuit was filed on Monday against Adobe in the U.S. Federal District Court, Central District of California, in Los Angeles. Shell and Slate is a technology firm with an emphasis on 2D graphics that was founded in November 2000. The company’s founder, Ben Weiss, is a software architect who was a principal developer of the Kai’s Power Tools and Kai’s Power GOO graphics product lines.