An anonymous reader writes "3D Systems, one of the big fish in 3D printer manufacturing, filed a suit against Formlabs's hugely popular Form1 printer put forth on Kickstarter. The crowdfunding effort has amassed close to 3M US Dollars, of an initial 100K requested. 3D Systems accuses Formlabs and Kickstarter of knowingly infringing one of its still valid blanket patents on stereolithography and cross-sectional printing of 3D objects. The company is probably going to go for the kill, as one can deduce from the demands on their complaint." In "The State of Community Fabrication" presentation at HOPE9, Far McKon noted that no one had yet filed a patent lawsuit against a 3D printing company, but it looks like his fears have come true.