l-ascorbic writes: "In 1999, Internet Pictures Corporation (IPIX) started persecuting anyone who made software to produce 360 images. They succeeded in forcing Professor Helmut Dersch, the creator of the GPL Panorama Tools to remove certain functionality from his software. Well, they're at it again. They have now forced him to shut his website. IPIX hold several US patents on remapping fisheye images, and first went after US sites that linked to the PanoTools site. Prof Dersch says he may now have to distribute his software using tricks similar to those needed by GIMP to avoid the Unisys GIF patents."