Ocuco Requests Re-Examination of Zeiss “Freeform” Patent

Ocuco Inc. has filed a re-examination request with the U.S. Patent office, seeking re-examination of Carl Zeiss Vision’s Patent 6,089,713, which claims the invention of back-surface progressive lenses. A “re-examination” is an administrative procedure established in the patent regulations that allows any person to request that the Patent Office reconsider its grant of a patent, based on  “substantial new issues of patentability”, which the requester must clearly set out. Read more.

Back in summer, Zeiss won a lawsuit about protecting its patent from use by others. See the results.

Midwest Lens Offering Single-Vision Freeform Lens

"The multi-purpose freeform single vision design that takes advantage of digital enhancements.
Perfecta Single Vision digital lens takes advantage of our in-depth knowledge in personalized ophthalmic lens design. The Perfecta Single Vision design has been engineered for peak optical performance regardless of the frame style or lens material in most prescriptions," according to Midwest Lens. "Lenticularization is a process developed to minimize the edge thickness of a lens. The lab defines an optimal region around the fitting cross; outside this region the software reduces the thickness with a gradual change in curvature, resulting in a thinner lens." Read more.