Form 8-K












Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 22, 2013



Horizon Pharma, Inc.

(Exact name of registrant as specified in its charter)




Delaware   001-35238   27-2179987
(State of incorporation)   (Commission File No.)   (IRS Employer Identification No.)
520 Lake Cook Road, Suite 520, Deerfield, Illinois   60015
(Address of principal executive offices)   (Zip Code)

Registrant’s telephone number, including area code: (224) 383-3000



Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)


¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)


¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))


¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))




Item 8.01 Other Events.

On October 22, 2013, we, together with Jagotec AG, filed suit in the United States District Court for the District of New Jersey against Par Pharmaceutical Companies, Inc. and Par Pharmaceutical, Inc. (collectively, “Par”) in response to a Paragraph IV Patent Certification from Par advising that Par had filed an Abbreviated New Drug Application (“ANDA”) with the U.S. Food and Drug Administration (“FDA”) for a generic version of RAYOS® containing 2 mg and 5 mg of prednisone. The lawsuit alleges that Par has infringed U.S. Patent Nos. 6,488,960, 6,677,326, 8,168,218, 8,309,124 and 8,394,407 by filing an ANDA seeking approval from the FDA to market generic versions of RAYOS® prior to the expiration of the patents. The subject patents are listed in the FDA’s Approved Drug Products with Therapeutic Equivalence Evaluations, commonly known as the Orange Book. Our commencement of the patent infringement lawsuit stays, or bars, FDA approval of Par’s ANDA for 30 months or until an earlier district court decision that the subject patents are not infringed or invalid.


Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


Date: October 23, 2013   Horizon Pharma, Inc.

/s/ Robert J. De Vaere

    Robert J. De Vaere
    Executive Vice President and Chief Financial Officer