DSM Desotech Inc. v. 3D Sys. Corp., No. 13-1298 (Fed. Cir. 2014)Annotate this Case
Rapid-prototyping “additive technology” creates parts by building layer upon layer of plastics, metals, or ceramics. Subtractive technology starts with a block and cuts away layers. Additive technology include SL, fused deposition modeling, laser sintering, 3D printing, direct metal laser sintering, and digital light processing. 3DS is the sole U.S. supplier of SL machines, which use an ultraviolet laser to trace a cross section of an object on a vat of liquid polymer resin. The laser solidifies the resin it touches, while untouched, areas remain liquid. After one cross-section has solidified, the newly formed layer is lowered below the surface of the resin. The process is repeated until the object is completed. Users of SL machines often own many machines with varying sizes, speeds, and accuracy levels. 3DS began equipping some of its SL machines with wireless technology that allows a receiver to communicate with a transmitter on the cap of a resin bottle. A software-based lockout feature shuts the machine off upon detection of a resin not approved by 3DD. 3DS has approved two of Desotech’s resins and entered into negotiations for approval of additional resins. After negotiations broke down, Desotech sued, alleging tying, unreasonable restraint of trade, and attempted monopolization under the Sherman Act; tying under the Clayton Act; patent infringement; and violations of the Illinois Antitrust and Uniform Deceptive Trade Practices Acts. The district court granted 3DS summary judgment on the antitrust claims and certain state-law claims. The parties stipulated to dismissal of the remaining claims. The Federal Circuit affirmed.