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Company Wins Summary Judgment In Patent Litigation


New York, NY - Kenyon & Kenyon LLP client KV Pharmaceutical Company has announced that the United States District Court for the Eastern District of Missouri has granted its motions for summary judgment in a patent infringement case filed against it by AstraZeneca. The case arose from KV’s submission of ANDAs seeking approval to market generic formulations of AstraZeneca’s beta-blocker Toprol-XL (metoprolol succinate extended-release tablets) The case is In re Metoprolol Succinate Patent Litigation, MDL-1620-RWS.

The Court granted the motions filed by KV Pharmaceutical Company and its co-defendants Andrx Corporation and Eon Labs for summary judgment of invalidity and unenforceability of both patents that were asserted by AstraZeneca (U.S. Patents 5,001,161 and 5,081,154). Both patents were held invalid, as well as being held unenforceable for inequitable conduct committed by AstraZeneca during prosecution of the patents before the U.S. Patent and Trademark Office.

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Did You Know?

There is a time limit on patent protection.

For applications filed on or after June 8, 1995, utility and plant patents are granted for a term which begins with the date of the grant and usually ends 20 years from the date you first applied for the patent subject to the payment of appropriate maintenance fees. Design patents last 14 years from the date you are granted the patent. Note: Patents in force on June 8 and patents issued thereafter on applications filed prior to June 8, 1995 automatically have a term that is the greater of the twenty year term discussed above or seventeen years from the patent grant.

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Claim

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The definition of the monopoly rights that the applicant is trying to obtain for the invention.

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International Preliminary Examining Authority - either a national Office or an intergovernmental organization whose tasks include the establishment of examination reports on inventions.

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