
[Federal Register Volume 77, Number 67 (Friday, April 6, 2012)]
[Notices]
[Page 20829]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-8337]



[[Page 20829]]

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DEPARTMENT OF HEALTH AND HUMAN SERVICES

Food and Drug Administration

[Docket Nos. FDA-2011-E-0371 and FDA-2011-E-0379]


Determination of Regulatory Review Period for Purposes of Patent 
Extension; NATROBA

AGENCY: Food and Drug Administration, HHS.

ACTION: Notice.

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SUMMARY: The Food and Drug Administration (FDA) has determined the 
regulatory review period for NATROBA and is publishing this notice of 
that determination as required by law. FDA has made the determination 
because of the submission of applications to the Director of Patents 
and Trademarks, Department of Commerce, for the extension of patents 
which claim that human drug product.

ADDRESSES: Submit electronic comments to http://www.regulations.gov. 
Submit written petitions along with three copies and written comments 
to the Division of Dockets Management (HFA-305), Food and Drug 
Administration, 5630 Fishers Lane, Rm. 1061, Rockville, MD 20852.

FOR FURTHER INFORMATION CONTACT: Beverly Friedman, Office of Regulatory 
Policy, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 
51, Rm. 6222, Silver Spring, MD 20993-0002, 301-796-3602.

SUPPLEMENTARY INFORMATION: The Drug Price Competition and Patent Term 
Restoration Act of 1984 (Pub. L. 98-417) and the Generic Animal Drug 
and Patent Term Restoration Act (Pub. L. 100-670) generally provide 
that a patent may be extended for a period of up to 5 years so long as 
the patented item (human drug product, animal drug product, medical 
device, food additive, or color additive) was subject to regulatory 
review by FDA before the item was marketed. Under these acts, a 
product's regulatory review period forms the basis for determining the 
amount of extension an applicant may receive.
    A regulatory review period consists of two periods of time: A 
testing phase and an approval phase. For human drug products, the 
testing phase begins when the exemption to permit the clinical 
investigations of the drug becomes effective and runs until the 
approval phase begins. The approval phase starts with the initial 
submission of an application to market the human drug product and 
continues until FDA grants permission to market the drug product. 
Although only a portion of a regulatory review period may count toward 
the actual amount of extension that the Director of Patents and 
Trademarks may award (for example, half the testing phase must be 
subtracted as well as any time that may have occurred before the patent 
was issued), FDA's determination of the length of a regulatory review 
period for a human drug product will include all of the testing phase 
and approval phase as specified in 35 U.S.C. 156(g)(1)(B).
    FDA recently approved for marketing the human drug product NATROBA 
(spinosad). NATROBA is indicated for the topical treatment of head lice 
infestations in patients four years of age and older. Subsequent to 
this approval, the Patent and Trademark Office received a patent term 
restoration application for NATROBA (U.S. Patent Nos. 6,063,771 and 
6,342,482) from Eli Lilly and Company, and the Patent and Trademark 
Office requested FDA's assistance in determining these patents' 
eligibility for patent term restoration. In a letter dated June 22, 
2011, FDA advised the Patent and Trademark Office that this human drug 
product had undergone a regulatory review period and that the approval 
of NATROBA represented the first permitted commercial marketing or use 
of the product. Thereafter, the Patent and Trademark Office requested 
that FDA determine the product's regulatory review period.
    FDA has determined that the applicable regulatory review period for 
NATROBA is 2,261 days. Of this time, 1,534 days occurred during the 
testing phase of the regulatory review period, while 727 days occurred 
during the approval phase. These periods of time were derived from the 
following dates:
    1. The date an exemption under section 505(i) of the Federal Food, 
Drug, and Cosmetic Act (the FD&C Act) (21 U.S.C. 355(i)) became 
effective: November 11, 2004. FDA has verified the applicant's claim 
that the date the investigational new drug application became effective 
was on November 11, 2004.
    2. The date the application was initially submitted with respect to 
the human drug product under section 505(b) of the FD&C Act: January 
22, 2009. FDA has verified the applicant's claim that the new drug 
application (NDA) for NATROBA (NDA 22-408) was submitted on January 22, 
2009.
    3. The date the application was approved: January 18, 2011. FDA has 
verified the applicant's claim that NDA 22-408 was approved on January 
18, 2011.
    This determination of the regulatory review period establishes the 
maximum potential length of a patent extension. However, the U.S. 
Patent and Trademark Office applies several statutory limitations in 
its calculations of the actual period for patent extension. In its 
applications for patent extension, this applicant seeks 1,493 days of 
patent term extension.
    Anyone with knowledge that any of the dates as published are 
incorrect may submit to the Division of Dockets Management (see 
ADDRESSES) either electronic or written comments and ask for a 
redetermination by June 5, 2012. Furthermore, any interested person may 
petition FDA for a determination regarding whether the applicant for 
extension acted with due diligence during the regulatory review period 
by October 3, 2012. To meet its burden, the petition must contain 
sufficient facts to merit an FDA investigation. (See H. Rept. 857, part 
1, 98th Cong., 2d sess., pp. 41-42, 1984.) Petitions should be in the 
format specified in 21 CFR 10.30.
    Interested persons may submit to the Division of Dockets Management 
(see ADDRESSES) electronic or written comments and written petitions. 
It is only necessary to send one set of comments. However, if you 
submit a written petition, you must submit three copies of the 
petition. Identify comments with the docket number found in brackets in 
the heading of this document.
    Comments and petitions that have not been made publicly available 
on regulations.gov may be viewed in the Division of Dockets Management 
between 9 a.m. and 4 p.m., Monday through Friday.

    Dated: March 19, 2012.
Jane A. Axelrad,
Associate Director for Policy, Center for Drug Evaluation and Research.
[FR Doc. 2012-8337 Filed 4-5-12; 8:45 am]
BILLING CODE 4160-01-P


