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NEWS OF 1999

(Mar. 30, 1999)
Nidek Files Antitrust Lawsuit Against VISX

(Feb. 24, 1999)
Nidek Files Counterclaims Against VISX Excimer Laser Patents

(Feb. 18, 1999)
Nidek Responds to Patent infringement Allegations by VISX

(Feb. 5, 1999)
Nidek and Partners Create New Human Graft Tissue Joint Venture

(Feb. 3, 1999)
Nidek wins another round in excimer laser patent litigation

(Jan. 21, 1999)
Nidek defends itself against VISX

NEWS OF 1998

NEWS OF 1997



- SAN FRANCISCO, USA, February 18, 1999 -

Nidek has filed its response in U.S. District Court to patent infringement allegations made by VISX, Inc. (Santa Clara, CA), declaring that the Nidek EC-5000 excimer laser does not infringe any valid and enforceable patent held by VISX. The response also contends that each of the U.S. patents under which VISX brought suit against Nidek (U.S. Patent nos. 4,718,418, 5,711,762 and 4,732,148) are invalid and unenforceable for several reasons, including VISX's misuse of their patents and a failure to meet requirements for patentability.

The response, filed in the District Court's San Francisco Division earlier this week, claims the patent applicant Stephen Trokel made materially false representations that he solely invented the subject matter of the '762 patent, and violated a duty of candor by not disclosing relevant prior art. In October of last year, Nidek successfully defended itself against another patent infringement lawsuit brought by VISX, Inc. in the United Kingdom. In that case, VISX's European patents Nos. 0,151,869 and 0,207,648 were found either invalid, or Nidek was found not to infringe.

Nidek Co., Ltd. is a 27-year-old privately held company located in Japan, with subsidiary offices in the United States and France. Nidek manufactures intraocular lenses and surgical and diagnostic instrumentation for eye care specialists in over 90 countries. The company's EC-5000 excimer laser has been in development since 1985, and received U.S. regulatory approval for PRK of mild to moderate myopia, in December of last year. Excimer lasers are used to correct refractive errors and reduce dependence on glasses and contact lenses by altering the shape of the cornea in a rapid procedure. More than 400 EC-5000 laser are in use throughout the world.

For more information please contact Dr. Ray Sayano of Nidek Technologies Inc. at (626) 578-1351 or by fax at (626) 578-1327.


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