
[Federal Register Volume 76, Number 54 (Monday, March 21, 2011)]
[Notices]
[Pages 15323-15324]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-6509]


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DEPARTMENT OF HEALTH AND HUMAN SERVICES

Food and Drug Administration

[Docket No. FDA-2010-E-0241]


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

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 ATRYN and is publishing this notice of 
that determination as required by law. FDA has made the determination 
because of the submission of an application to the Director of Patents 
and Trademarks, Department of Commerce, for the extension of a patent 
which claims that human biological 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 biological products, the 
testing phase begins when the exemption to permit the clinical 
investigations of the biological becomes effective and runs until the 
approval phase begins. The approval phase starts with the initial 
submission of an application to market the human biological product and 
continues until FDA grants permission to market the biological 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 biological 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 biologic product 
ATRYN (antithrombin (recombinant)). ATRYN is indicated for the 
prevention of peri-operative and peri-partum thromboembolic events in 
hereditary antithrombin deficient patients. Subsequent to this 
approval, the Patent and Trademark Office received a patent term 
restoration application for ATRYN (U.S. Patent No. 6,441,145) from GTC 
Biotherapeutics, Inc., and the Patent and Trademark Office requested 
FDA's assistance in determining this patent's eligibility for patent 
term restoration. In a letter dated February 17, 2010, FDA advised the 
Patent and Trademark Office that this human biological product had 
undergone a regulatory review period and that the approval of ATRYN 
represented the first permitted commercial marketing or use of the 
recombinant 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 
ATRYN is 4,468 days. Of this time, 4,285 days occurred during the 
testing phase of the regulatory review period, while 183 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 (21 U.S.C. 355(i)) became effective: November 
15, 1996. The applicant claims November 14, 1996, as the date the 
investigational new drug application (IND) became effective. However, 
FDA records indicate that the IND effective date was November 15, 1996, 
which was 30 days after FDA receipt of the IND.
    2. The date the application was initially submitted with respect to 
the human biological product under section 351 of the Public Health 
Service Act (42 U.S.C. 262): August 8, 2008. The applicant claims 
January 31, 2008, as the date the biologics license application (BLA) 
for ATRYN (BLA 125284) was initially submitted. However, FDA records 
indicate that BLA 125284 was submitted on August 8, 2008.
    3. The date the application was approved: February 6, 2009. FDA has 
verified the applicant's claim that BLA 125284 was approved on February 
6, 2009.
    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 
application for patent extension, this applicant seeks 1,243 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 May 20, 2011. 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 September 19, 2011. 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. It is no longer 
necessary to send three copies of mailed comments. However, if you 
submit a written petition, you must submit three copies of the 
petition. Identify comments with

[[Page 15324]]

the docket number found in brackets in the heading of this document.
    Comments and petitions that have not been made publicly available 
on http://www.regulations.gov may be viewed in the Division of Dockets 
Management between 9 a.m. and 4 p.m., Monday through Friday.

    Dated: February 14, 2011.
Jane A. Axelrad,
Associate Director for Policy, Center for Drug Evaluation and Research.
[FR Doc. 2011-6509 Filed 3-18-11; 8:45 am]
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