E.I. du Pont de Nemours and Company v. Unifrax I, LLC, C.A. No. 14-1250 – RGA, January 13, 2016

Andrews, J.   Claim construction opinion issues regarding seven terms from one patent.  A Markman hearing took place on December 7, 2015

The disputed technology relates to laminate flame barrier materials. The following terms were considered:

1. “laminate”
2. “in order”
3. “inorganic refractory layer”
4. “platelets”
5. “100 % by weight”
6. “vermiculite”

“wherein the inorganic refectory layer of (iii)comprises platelets in an amount of 100% by weight with a dry areal weight of 15to 50 gsm and a residual moisture content of not greater than 10 percent by weight”