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Press Release

AstraZeneca and POZEN File Patent Infringement Lawsuit Against Dr. Reddy's

CHAPEL HILL, N.C., Apr 25, 2011 (BUSINESS WIRE) --

POZEN Inc. (NASDAQ: POZN),a pharmaceutical company committed to transforming medicine that transforms lives, today announced that it and AstraZeneca filed a lawsuit against Dr. Reddy's Laboratories (Dr. Reddy's) in the United States District Court for the District of New Jersey, for infringement of U.S. Patent No. 6,926,907 relating to VIMOVO(TM) (naproxen / esomeprazole magnesium) delayed-release tablets. In a Notice Letter sent to AstraZeneca and POZEN in March 2011 (Notice Letter), Dr. Reddy's informed AstraZeneca and POZEN that it submitted an Abbreviated New Drug Application (ANDA) seeking U.S. Food and Drug Administration (FDA) approval to market a generic version of VIMOVO prior to expiration of U.S. Patent No. 6,926,907, which is one of seven patents listed in the FDA's Orange Book for VIMOVO. The patent expires in 2023. Under the terms of its agreement with POZEN, AstraZeneca has exercised its first right to defend the patent at issue and will take the leading role in prosecuting the infringement suit against Dr. Reddy's.

The filing of this patent infringement lawsuit by AstraZeneca and POZEN within forty-five days of receipt of Dr. Reddy's Notice Letter will result in the FDA automatically instituting a stay, or bar, of final approval of Dr. Reddy's ANDA for up to 30 months or until a final court decision is entered in the infringement suit in favor of Dr. Reddy's, whichever occurs first. VIMOVO currently has regulatory exclusivity through April 30, 2013.

POZEN and AstraZeneca have full confidence in and will vigorously defend and enforce its intellectual property protecting VIMOVO.


VIMOVO, co-developed by POZEN Inc. and AstraZeneca, is a fixed-dose combination of delayed-release enteric-coated naproxen, a pain-relieving non-steroidal anti-inflammatory drug (NSAID), and immediate release esomeprazole, a proton pump inhibitor (PPI). On April 30, 2010, the Company announced that the U.S. Food and Drug Administration (FDA) approved VIMOVO delayed-release tablets for the relief of the signs and symptoms of osteoarthritis (OA), rheumatoid arthritis (RA) and ankylosing spondylitis (AS), and to decrease the risk of developing gastric ulcers in patients at risk of developing NSAID-associated gastric ulcers. VIMOVO is not recommended for initial treatment of acute pain because the absorption of naproxen is delayed compared to the absorption from other naproxen-containing products. Controlled studies do not extend beyond six months.

Since FDA approval, AstraZeneca's initial U.S. commercial efforts have been focused on building brand awareness and on developing formulary access and reimbursement, with detailing having begun in September 2010.

VIMOVO received positive agreement for approval in 23 countries across the European Union in October 2010, which was followed by marketing and pricing approval in the United Kingdom, the first major ex-U.S. territory.

For Full Prescribing Information see www.vimovo.com.


POZEN Inc. is a progressive pharmaceutical company that is transforming how the healthcare industry addresses unmet medical needs. By utilizing a unique in-source model and focusing on integrated therapies, POZEN has successfully developed and obtained FDA approval of two self-invented products in two years - something almost no other small pharmaceutical company has done. Funded by these two milestone/royalty streams, POZEN is now creating a portfolio of cost-effective, evidence based integrated aspirin therapies designed to enable the full power of aspirin by reducing its GI toxicity. The lead candidate, PA32540, is being investigated for the secondary prevention of cardiovascular disease in patients at risk for aspirin-induced ulcers and has entered Phase 3 clinical trials. POZEN is retaining commercial control of the pipeline assets and will develop a 21st century sales and marketing organization using a new sales force model and digital communications. The Company's common stock is traded on The NASDAQ Stock Market under the symbol "POZN". For more detailed company information, including copies of this and other press releases, please visit www.pozen.com.

Forward-Looking Statements

Statements included in this press release that are not historical in nature are "forward-looking statements" within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. You should be aware that our actual results could differ materially from those contained in the forward-looking statements, which are based on current market data and research (including third party and POZEN sponsored market studies and reports), management's current expectations and are subject to a number of risks and uncertainties, including, but not limited to, our failure to successfully commercialize our product candidates; costs and delays in the development and/or FDA approval of our product candidates, including as a result of the need to conduct additional studies, or the failure to obtain such approval of our product candidates, including as a result of changes in regulatory standards or the regulatory environment during the development period of any of our product candidates; uncertainties in clinical trial results or the timing of such trials, resulting in, among other things, an extension in the period over which we recognize deferred revenue or our failure to achieve milestones that would have provided us with revenue; our inability to maintain or enter into, and the risks resulting from our dependence upon, collaboration or contractual arrangements necessary for the development, manufacture, commercialization, marketing, sales and distribution of any products, including our dependence on GlaxoSmithKline for the sales and marketing of Treximet(R) and our dependence on AstraZeneca for the sales and marketing of VIMOVO(TM); competitive factors; our inability to protect our patents or proprietary rights and obtain necessary rights to third party patents and intellectual property to operate our business; our inability to operate our business without infringing the patents and proprietary rights of others; general economic conditions; the failure of any products to gain market acceptance; our inability to obtain any additional required financing; technological changes; government regulation; changes in industry practice; and one-time events, including those discussed herein and in our Annual Report on Form 10-K for the period ended December 31, 2010. We do not intend to update any of these factors or to publicly announce the results of any revisions to these forward-looking statements.


Bill Hodges
Chief Financial Officer
Stephanie Bonestell
Manager, Investor Relations & Public Relations