Impax Laboratories Confirms Patent Challenge Relating to Generic TOVIAZ® 4 mg and 8 mg

Impax Laboratories Confirms Patent Challenge Relating to Generic TOVIAZ® 4 mg and 8 mg

HAYWARD, Calif.--(BUSINESS WIRE)-- Impax Laboratories, Inc. (Nasdaq: IPXL) today confirms that it has initiated a challenge of the patents listed in the Orange Book in connection with TOVIAZ® (fesoterodine fumarate extended-release tablets, 4 mg and 8 mg).


Impax filed its Abbreviated New Drug Application (ANDA) containing a paragraph IV certification for a generic version of TOVIAZ®with the U.S. Food & Drug Administration (FDA). Following receipt of the notice from the FDA that Impax's ANDA had been accepted for filing, Impax notified the New Drug Application holder and patent owner of its paragraph IV certification.

On June 28, 2013, Pfizer Inc. and UCB Pharma GmbH filed suit for patent infringement against Impax in the United States District Court for the District of Delaware. This action formally initiated the patent challenge process under the Hatch-Waxman Act.

Once the ANDA is approved by the FDA, Global Pharmaceuticals, Impax's generic division, intends to commercialize the product.

TOVIAZ® reduces spasms of the bladder muscles. TOVIAZ is used to treat overactive bladder with symptoms of urinary frequency, urgency, and incontinence. According to IMS Health (NSP), U.S. sales of TOVIAZ®, 4 mg and 8 mg were approximately $159 million for the 12 months ended May 2013.

About Impax Laboratories, Inc.

Impax Laboratories, Inc. (Impax) is a technology based specialty pharmaceutical company applying its formulation expertise and drug delivery technology to the development of controlled-release and specialty generics in addition to the development of central nervous system disorder branded products. Impax markets its generic products through its Global Pharmaceuticals division and markets its branded products through the Impax Pharmaceuticals division. Additionally, where strategically appropriate, Impax develops marketing partnerships to fully leverage its technology platform and pursues partnership opportunities that offer alternative dosage form technologies, such as injectables, nasal sprays, inhalers, patches, creams and ointments. For more information, please visit the Company's Web site at: www.impaxlabs.com.

"Safe Harbor" statement under the Private Securities Litigation Reform Act of 1995:

To the extent any statements made in this news release contain information that is not historical, these statements are forward-looking in nature and express the beliefs and expectations of management. Such statements are based on current expectations and involve a number of known and unknown risks and uncertainties that could cause the Company's future results, performance or achievements to differ significantly from the results, performance or achievements expressed or implied by such forward-looking statements. Such risks and uncertainties include, but are not limited to, the effect of current economic conditions on the Company's industry, business, financial position and results of operations, fluctuations in revenues and operating income, the Company's ability to promptly correct the issues raised in the warning letter and Form 483 observations received from the FDA, the Company's ability to successfully develop and commercialize pharmaceutical products in a timely manner, reductions or loss of business with any significant customer, the impact of consolidation of the Company's customer base, the impact of competition, the Company's ability to sustain profitability and positive cash flows, any delays or unanticipated expenses in connection with the operation of the Company's Taiwan facility, the effect of foreign economic, political, legal and other risks on the Company's operations abroad, the uncertainty of patent litigation, the increased government scrutiny on the Company's agreements with brand pharmaceutical companies, consumer acceptance and demand for new pharmaceutical products, the impact of market perceptions of the Company and the safety and quality of the Company's products, the difficulty of predicting FDA filings and approvals, the Company's ability to achieve returns on its investments in research and development activities, the Company's inexperience in conducting clinical trials and submitting new drug applications, the Company's ability to successfully conduct clinical trials, the Company's reliance on third parties to conduct clinical trials and testing, impact of illegal distribution and sale by third parties of counterfeits or stolen products, the availability of raw materials and impact of interruptions in the Company's supply chain, the use of controlled substances in the Company's products, disruptions or failures in the Company's information technology systems and network infrastructure, the Company's reliance on alliance and collaboration agreements, the Company's dependence on certain employees, the Company's ability to comply with legal and regulatory requirements governing the healthcare industry, the regulatory environment, the Company's ability to protect its intellectual property, exposure to product liability claims, changes in tax regulations, the Company's ability to manage growth, including through potential acquisitions, the restrictions imposed by the Company's credit facility, uncertainties involved in the preparation of the Company's financial statements, the Company's ability to maintain an effective system of internal control over financial reporting, the effect of terrorist attacks on the Company's business, the location of the Company's manufacturing and research and development facilities near earthquake fault lines and other risks described in the Company's periodic reports filed with the Securities and Exchange Commission. Forward-looking statements speak only as to the date on which they are made, and the Company undertakes no obligation to update publicly or revise any forward-looking statement, regardless of whether new information becomes available, future developments occur or otherwise.



Impax Laboratories, Inc.
Mark Donohue
Investor Relations and Corporate Communications
215-558-4526
www.impaxlabs.com

KEYWORDS:   United States  North America  California

INDUSTRY KEYWORDS:

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