Supernus Wins Appeal Case on Oxtellar XR®

ROCKVILLE, Md., Dec. 12, 2016 -- Supernus Pharmaceuticals, Inc. (NASDAQ:SUPN), a specialty pharmaceutical company focused on developing and commercializing products for the treatment of central nervous system diseases, today announced that the U.S. Court of Appeals for the Federal Circuit affirmed the New Jersey District Court’s decision that Actavis infringed two Oxtellar XR® Orange Book patents (U.S. Patent Nos. 7,722,898 and 7,910,131) and that all three Oxtellar XR Orange Book patents (U.S. Patent Nos. 7,722,898, 7,910,131 and 8,617,600) are valid.

“We are very pleased with the Appeals Court decision and continue to vigorously defend our intellectual property to provide our products with the protection they are entitled to,” said Jack A. Khattar, President and CEO of Supernus. “This decision, following the New Jersey District Court’s decision earlier in February this year, further substantiates Supernus’ strong patents protecting Oxtellar XR."

About Oxtellar XR

Oxtellar XR is the first approved novel, oral once-daily extended release formulation of oxcarbazepine for the treatment of epilepsy. Oxtellar XR is an antiepileptic drug indicated for adjunctive therapy in the treatment of partial seizures in adults and in children 6 to 17 years of age. The product is available in 150mg, 300mg, and 600mg extended-release tablets.

For full prescribing and safety information click here.

About Supernus Pharmaceuticals, Inc.

Supernus Pharmaceuticals, Inc. is a specialty pharmaceutical company focused on developing and commercializing products for the treatment of central nervous system diseases. The Company has two marketed products for epilepsy, Oxtellar XR (extended-release oxcarbazepine) and Trokendi XR^® (extended-release topiramate). The Company is also developing several product candidates to address large market opportunities in psychiatry, including SPN-810 for the treatment of Impulsive Aggression in ADHD patients and SPN-812 for the treatment of ADHD.

Forward Looking Statements

This press release contains forward-looking statements regarding the Company's ability to defend and enforce its intellectual property rights covering Oxtellar XR or Trokendi XR. Actual results may differ materially from those in these forward-looking statements as a result of various factors, including, but not limited to, the ability of Supernus to finance potential litigation and to prevail in any such proceeding to successfully defend its intellectual property rights. For a further description of these and other risks facing the Company, please see the risk factors described in the Company's Annual Report Form 10-K that was filed with the United States Securities and Exchange Commission ("Commission") on March 9, 2016 under the caption "Risk Factors" and the updates to these risk factors in the Company's Quarterly Report on Form 10-Q for the period ended March 31, 2016 filed with the Commission on May 9, 2016, and the Quarterly Report on Form 10-Q for the period ended June 30, 2016 filed with the Commission on August 5, 2016. Forward-looking statements speak only as of the date of this press release, and the Company undertakes no obligation to update or revise these statements, except as may be required by law.

CONTACT:

Jack A. Khattar, President and CEO
Gregory S. Patrick, Vice President and CFO
Supernus Pharmaceuticals, Inc.
Tel: (301) 838-2591

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Investor Contact:
Peter Vozzo
Westwicke Partners
Office: (443) 213-0505
Mobile: (443) 377-4767
Email: [email protected]