DSM announces successful defense of fiber optic coating patent portfolio
In November 2012, eight of DSM’s patents were challenged in ten Inter Partes Review (IPR) proceedings. On 1 May and 9 May 2014, the USPTO Patent Trial and Appeal Board upheld the patentability of a substantial majority of the claims in the challenged patents and in four of the patents every claim was upheld.
“DSM remains confident in the strength of its patent portfolio and expected this very positive outcome,” said Rob Crowell, President, DSM Functional Materials. “Our business has always been focused on bringing new and innovative products to our customers and the telecommunications industry. Developing and protecting intellectual property is a key component of our strategy to support our significant investments. These decisions by the USPTO validate our ongoing commitment to innovation.”
The patents where all claims were confirmed valid include: U.S. Patents 6,961,508 and 7,171,103 titled “Coated Optical Fibers,” 6,438,306 titled “Radiation Curable Resin Composition,” and 6,339,666 titled “Radiation-Curable Optical Glass Fiber Coating Compositions, Coated Optical Glass Fibers, and Optical Glass Fiber Assemblies.” These IPRs were among the first cases in which a patent owner was successful in defending the patentability of their patents.
DSM is a global leader that has provided cutting edge UV-curable coatings for optical fiber for over 40 years. The DeSolite® Supercoatings family, the latest innovation from DSM, were developed to enhance quality criteria that enable customers to design their glass optical fiber systems and processes to provide low microbending resistance. This ultimately translates to reliable signal quality and performance in data transmission in optical fiber systems. We continue to innovate new materials with our customers that advance the telecommunications industry further.