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A Board of Appeal at the European Patent Office (EPO) has maintained Carbon’s European Patent No. 3158400 in amended form, closing a proceeding that ran through two levels of EPO review over roughly three and a half years.
Titled “Methods of Producing Three-Dimensional Objects from Materials Having Multiple Mechanisms of Hardening,” the patent covers a process that pairs light-based 3D printing with a secondary thermal curing step. Carbon states the technology is used in automotive, dental, medical, and consumer product manufacturing. The patent was filed on June 22, 2015, and granted on June 1, 2022.
“This decision confirms the strength and breadth of the innovation that is foundational to Carbon’s platform. Dual-cure chemistry enables the production of high-performance end-use products