Indianapolis, Indiana – Patent lawyers for Alcon Research, Ltd. and Alcon Laboratories, Inc., both of Fort Worth, TX, Alcon Pharmaceuticals, Ltd. of Fribourg, Switzerland, and Kyowa Hakko Kirin Co., Ltd. of Tokyo, Japan, filed a patent infringement suit alleging Sandoz Inc. of Princeton, NJ, has infringed, and will infringe, the following three patents, as issued by the U.S. Patent Office: Patent No. 5,641,805, titled TOPICAL OPHTHALMIC FORMULATIONS FOR TREATING ALLERGIC EYE DISEASES; Patent No. 6,995,186, titled OLOPATADINE FORMULATIONS FOR TOPICAL ADMINISTRATION; and Patent No. 7,402,609, titled OLOPATADINE FORMULATIONS FOR TOPICAL ADMINISTRATION.
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