Perrigo Company Granted Summary Judgment of Non-Infringement in Mucinex(R) Case

ALLEGAN, Mich., Feb. 12 /PRNewswire-FirstCall/ -- Perrigo Company announced today that a federal court has granted summary judgment in its favor in patent litigation involving Guaifenesin Extended-Release Tablets, 600 mg, a generic version of Mucinex(R) tablets. Perrigo had been sued by Adams Respiratory Therapeutics, Inc., (a subsidiary of Reckitt Benckiser Group plc.) the New Drug Application holder and patent owner. The United States District Court for the Western District of Michigan ruled today that Perrigo does not infringe the patent in the suit. Perrigo’s ANDA is awaiting FDA approval.

Mucinex(R) (guaifenesin extended-release tablets, 600 mg) an expectorant indicated to relieve chest congestion and make coughs more productive, had sales of approximately $162 million through food, drug and mass merchandisers for the 12 months ended January 2010, as measured by ACNielsen.

Note: Certain statements in this press release are forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, and are subject to the safe harbor created thereby. These statements relate to future events or the Company’s future financial performance and involve known and unknown risks, uncertainties and other factors that may cause the actual results, levels of activity, performance or achievements of the Company or its industry to be materially different from those expressed or implied by any forward-looking statements. In some cases, forward-looking statements can be identified by terminology such as “may,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “potential” or other comparable terminology. The Company has based these forward-looking statements on its current expectations, assumptions, estimates and projections. While the Company believes these expectations, assumptions, estimates and projections are reasonable, such forward-looking statements are only predictions and involve known and unknown risks and uncertainties, many of which are beyond the Company’s control. These and other important factors, including those discussed under “Risk Factors” in the Company’s Form 10-K for the year ended June 27, 2009, as well as the Company’s subsequent filings with the Securities and Exchange Commission, may cause actual results, performance or achievements to differ materially from those expressed or implied by these forward-looking statements. The forward-looking statements in this press release are made only as of the date hereof, and unless otherwise required by applicable securities laws, the Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

CONTACT: Arthur J. Shannon, Vice President, Investor Relations and
Communication, +1-269-686-1709, ajshannon@perrigo.com, or Daniel B.
Willard, Manager, Investor Relations and Communication, +1-269-686-1597,
dbwillard@perrigo.com

Web site: http://www.perrigo.com/

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