In a lawsuit filed in a US District Court, Macromedia charged Adobe with infringing on several Macromedia patents in Adobe publishing products. Specifically, Macromedia said certain blending capabilities in Adobe Illustrator, as well as sound-editing features in Adobe's Premiere product, make use of patented Macromedia technology.
In a statement Wednesday, Macromedia said it filed its lawsuit in direct response to the legal action taken against it on August 10 by Adobe. Macromedia also said it filed its response to Adobe's lawsuit, in which it denies any wrongdoing.
Adobe's earlier lawsuit charged that Macromedia used patented Adobe technology for a tabbed palette features in its products. Adobe expanded its complaint the following month, charging that image-rendering features in Macromedia's Dreamweaver and Flash products also make use of Adobe patents.