Artifex Software is legally moving against Palm over a potential GPL open source licensing violation involving the PDF reader feature of the Palm Pre smartphone.

Artifex requires that an entire application must be licensed under the GNU General Public License (GPL) if muPDF is part of the application.

If the software is not licensed under the GNU GPL, then Artifex requires a commercial license in order to use muPDF, according to the company's licensing terms.

Source: Techworld]Lawsuit alleges Palm Pre violates copyright - Artifex, copyright, gpl, GPL violation - Techworld