Macromedia was hauled into court yesterday by Adobe for breach of patents.

Adobe filed a suit against Macromedia in August 2000, alleging that Macromedia’s Flash interface infringed Adobe’s patent for tabbed palettes – a feature that allows users of design software to rearrange the on-screen workspace.

Macromedia responded with a counter-suit claiming Adobe’s Photoshop and GoLive products infringed two Macromedia-owned patents held for editing-tools.

The jury-trial that began yesterday will take place in a US District Court in Wilmington, Delaware, which is also host to the Hewlett-Packard trial.

The Macromedia counter-suit is expected to go before a jury shortly after the original case is decided.