EveryScape, a small Newton company, yesterday sued Adobe Systems over a Photoshop tool that lets users "clone" sections of photos.

The company, founded in 2002 by Byong Mok Oh, says it has patents on techniques for easily adjusting the perspective and lighting on pieces of images copied to other parts of images (for example, to erase a bird from in front of a cloud)and that Adobe illegally copied those techniques. In a lawsuit filed yesterday in U.S. District Court in Boston, Everyscape says it began selling a Photoshop plugin called "Perspective Clone Brush" in early 2005, but that: