The DVD6C Group licenses all patents owned by the Group members that are
"Essential" to make, use or sell "DVD Products" (as those terms are defined in the DVD6C License Agreement).
"Essential" is defined in the DVD6C License Agreement as "necessarily infringed when implementing the DVD Standard Specifications and/or
the +R/+RW Standard Specifications or claiming technologies for which there is no realistic alternative in implementing
the DVD Standard Specifications and/or the +R/+RW Standard Specifications" (excluding MPEG-2, CSS, CPPM and CPRM patents).
Attached are lists of certain patents owned by the Group members that have been reviewed by an impartial and independent expert retained by the Group, and which the expert has
determined are "Essential" at this time to implement the DVD Standard Specifications and/or the +R/+RW Standard Specifications.
The attached lists are for information purposes only.
These lists are offered by way of example and may not be exhaustive.
The DVD6C License includes all of the patents owned by the Group members that
meet the foregoing definition of "Essential" and only such patents.
Upon expiration of a patent included in the DVD6C License, or in the event of a subsequent determination that a patent is not valid or not "Essential",
that patent will not be included in the DVD6C license.
Members of the DVD6C Group may own other patents that do not meet the definition of "Essential" in the DVD6C License Agreement,
but which may be relevant to certain DVD Products or related products. Inquiries regarding such non-essential patents should be directed to the individual Group members.
The Group members reserve all of their respective rights with regard to such patents."