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 <P STYLE="line-height:1.0pt;margin-top:0pt;margin-bottom:0pt;border-bottom:1px solid #000000">&nbsp;</P>
<P STYLE="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&nbsp;</P> <P STYLE="margin-top:4pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman" ALIGN="center"><B>UNITED STATES </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman" ALIGN="center"><B>SECURITIES AND EXCHANGE COMMISSION </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>WASHINGTON, D.C. 20549 </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center>
<P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman" ALIGN="center"><B>FORM 8-K
</B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center> <P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>CURRENT REPORT </B></P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>Pursuant
to Section&nbsp;13 or 15(d) </B></P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>of the Securities Exchange Act of 1934 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman" ALIGN="center"><B>Date of Report (Date of earliest event reported): November&nbsp;20, 2013 </B></P>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center> <P STYLE="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:24pt; font-family:Times New Roman" ALIGN="center"><B>Horizon Pharma, Inc. </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>(Exact name of registrant as specified in its charter) </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P><center>
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<TD VALIGN="top" ALIGN="center"><B>Delaware</B></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center"><B>001-35238</B></TD>
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<TD VALIGN="top" ALIGN="center"><B>27-2179987</B></TD></TR>
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<TD VALIGN="top" ALIGN="center"><B>(State of incorporation)</B></TD>
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<TD VALIGN="top" ALIGN="center"><B>(Commission File No.)</B></TD>
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<TD VALIGN="top" ALIGN="center"><B>(IRS Employer Identification No.)</B></TD></TR>
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<TD VALIGN="top" COLSPAN="3" ALIGN="center"><B>520 Lake Cook Road, Suite 520, Deerfield, Illinois</B></TD>
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<TD VALIGN="top" ALIGN="center"><B>60015</B></TD></TR>
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<TD VALIGN="top" COLSPAN="3" ALIGN="center"><B>(Address of principal executive offices)</B></TD>
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<TD VALIGN="top" ALIGN="center"><B>(Zip Code)</B></TD></TR>
</TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Registrant&#146;s telephone number, including area code: (224)&nbsp;383-3000 </B></P>
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<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">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: </P> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></TD>
<TD ALIGN="left" VALIGN="top">Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425) </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD ALIGN="left" VALIGN="top">Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12) </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD ALIGN="left" VALIGN="top">Pre-commencement communications pursuant to Rule&nbsp;14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) </TD></TR></TABLE> <P STYLE="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD ALIGN="left" VALIGN="top">Pre-commencement communications pursuant to Rule&nbsp;13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) </TD></TR></TABLE> <P STYLE="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD WIDTH="9%" VALIGN="top" ALIGN="left"><B>Item&nbsp;8.01</B></TD>
<TD ALIGN="left" VALIGN="top"><B>Other Events. </B></TD></TR></TABLE> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">On November&nbsp;20, 2013, we were notified by counsel for Par Pharmaceutical Companies,
Inc. and Par Pharmaceutical, Inc. (collectively, &#147;Par&#148;) that Par had elected to withdraw its Abbreviated New Drug Application (&#147;ANDA&#148;) with the U.S. Food and Drug Administration (&#147;FDA&#148;) for a generic version of RAYOS<SUP
STYLE="font-size:85%; vertical-align:top">&reg;</SUP> containing 2 mg and 5 mg of prednisone. On October&nbsp;22, 2013, we, together with Jagotec AG, filed suit in the United States District Court for the District of New Jersey against Par in
response to a Paragraph IV Patent Certification from Par advising that Par had filed an ANDA with the FDA for a generic version of RAYOS<SUP STYLE="font-size:85%; vertical-align:top">&reg;</SUP> 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<SUP STYLE="font-size:85%; vertical-align:top">&reg;</SUP>
prior to the expiration of the patents. We will work with Par to provide a stipulation of dismissal of the case to the Court. The subject patents are listed in the FDA&#146;s Approved Drug Products with Therapeutic Equivalence Evaluations, commonly
known as the Orange Book. </P>

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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>SIGNATURES </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; text-indent:4%; font-size:10pt; font-family:Times New Roman">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. </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="top">Date: November&nbsp;22, 2013</TD>
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<TD VALIGN="bottom" COLSPAN="3">Horizon Pharma, Inc.</TD></TR>
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<TD VALIGN="top">By:</TD>
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<TD VALIGN="top"> <P STYLE="margin-top:0pt; margin-bottom:1pt; border-bottom:1px solid #000000; font-size:10pt; font-family:Times New Roman">&nbsp;/s/ Robert J. De Vaere</P></TD></TR>
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<TD VALIGN="bottom">Robert J. De Vaere</TD></TR>
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<TD VALIGN="bottom">Executive Vice President and Chief Financial Officer</TD></TR>
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Form 8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant
to Section 13 or 15(d)
of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): November 20, 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 November 20, 2013, we were notified by counsel for Par Pharmaceutical Companies,
Inc. and Par Pharmaceutical, Inc. (collectively, "Par") that Par had elected to withdraw its 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. 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 in
response to a Paragraph IV Patent Certification from Par advising that Par had filed an ANDA with the 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. We will work with Par to provide a stipulation of dismissal of the case to the Court. The subject patents are listed in the FDA's Approved Drug Products with Therapeutic Equivalence Evaluations, commonly
known as the Orange Book.
SIGNATURES
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: November 22, 2013
Horizon Pharma, Inc.
By:
/s/ Robert J. De Vaere
Robert J. De Vaere
Executive Vice President and Chief Financial Officer