One supplier to the stereolithography industry is suing another, as DSM Desotech Inc. filed a federal court lawsuit March 14 against 3D Systems Corp., charging that 3D Systems is stifling competition.
Elgin-based DSM Desotech also accuses 3D Systems of infringing on several of its patents.
DSM Desotech's rapid-prototyping subsidiary, DSM Somos, provides liquid resins that stereolithography equipment turns into three-dimensional models and prototypes.
In the lawsuit, DSM Desotech contends 3D Systems requires buyers of its large-frame stereolithography machines - particularly the 3D ViperT Pro SLA - to purchase 3D's own resin for use on the machines. DSM Desotech officials said they want customers to continue to have a choice of resin suppliers for their large-frame stereolithography equipment.
DSM Desotech also charges 3D Systems, based in Rock Hill, S.C., of violating patents owned by DSM Decotech through 3D's sale of the Viper Pro, SLA 7000 and SLA 5000 machines.
3D Systems did not return a call seeking comment.