A patent
infringement case was filed by Essilor against VSP Optical Group on Feb 22, 2013
in the Texas Eastern District Court for infringing eyeglass lenses used to correct
presbyopia and other disorders of accommodation. The other named defendants in
this case were: Indizen Optical Technologies, a lens design software (LDS) company and
Younger Optics which develops optical lens solutions. Essilor designs,
manufactures, and sells ophthalmic lenses and ophthalmic optical instruments.
The patent
involved in the suit is US6149271, which was originally issued to Edgar V.
Menezes, James S. Merritt and William Kokonaski on Nov 21, 2000 and expiring[i]
by Oct 23, 2018. The patent is currently assigned[ii]
to Essilor International (source: MaxVal’s Assignment
Database).
The '271 patent claims progressive addition lenses
and processes for making progressive addition lenses. The complaint alleged
that Indizen Optical Technologies develops a lens design software, IOT Futura®
and Younger Optics provides semi-finished lenses, both of which help in
producing finished lenses manufactured by VSP, UNITY PLxpression lenses that
infringe the '271 Patent. The complaint states that Indizen Optical
Technologies and Younger Optics encouraged VSP to make such infringing lenses. Essilor
also stated in the complaint that, it sent a letter to defendants notifying
their infringement of Essilor's 271 patent.
The
case is now concluded as the parties agreed to settle the dispute. On Nov 13,
Essilor filed stipulation of dismissal pursuant to which the Court ordered all the
claims and counterclaims in this action to be dismissed with prejudice with
each party bearing its own attorneys’ fees and costs.
See 4:13-cv-00099 for more details. To get
alerts on cases filed/closed, subscribe to our Litigation Alerts.
* Expected expiration date
using Patent Term Estimator, use our free tool or download our free Android app on Google Play Store.
[i]
Expected expiration date. Patent Term Estimator
is a free web-based tool that automatically calculates patent terms and
expiration dates for U.S. utility patents.
[ii]
MaxVal offers Patent Assignment Alert service
where subscribers receive email alerts when assignments relating to target
applications, patents or entities of interest are recorded.
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