Washington, D.C. 20549
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): October 28, 2020
Concert Pharmaceuticals, Inc.
(Exact name of registrant as specified in charter)
Delaware 001-36310 20-4839882
(State or Other Jurisdiction
of Incorporation)
File Number)
 (IRS Employer
Identification No.)
     65 Hayden Avenue, Suite 3000N
Lexington, Massachusetts
      (Address of principal executive offices)    (Zip Code)
Registrant’s telephone number, including area code: (781860-0045

(Former Name or Former Address, if Changed Since Last Report)

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 (see General Instruction A.2. below):
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))
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading symbol(s)Name of each exchange on which registered
Common stock, $0.001 par value per shareCNCENasdaq Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR 230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR 240.12b-2).
Emerging growth company     

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 8.01. Other Events.
On October 28, 2020, Incyte Corporation (“Incyte”) filed a post grant review (“PGR”) petition with the Patent Trial and Appeal Board (the “PTAB”) of the U.S. Patent and Trademark Office challenging the validity of U.S. Patent No. 10,561,659 (the “’659 Patent”) owned by Concert Pharmaceuticals, Inc. (the “Company”). The ’659 Patent claims pharmaceutical compositions with certain doses of CTP-543, the Company’s investigational treatment for alopecia areata, and methods of treating hair loss, including alopecia areata, with certain doses of CTP-543. The Company has three months following the date that Incyte’s PGR petition is docketed in order to file a response. The PTAB is expected to make a decision on whether to institute the PGR within three months after the filing of the Company’s response. The Company intends to vigorously defend the ’659 Patent.

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 30, 2020  By: /s/ Jeffrey A. Munsie
   Jeffrey A. Munsie
   Chief Legal Officer