
[Federal Register Volume 77, Number 67 (Friday, April 6, 2012)]
[Notices]
[Pages 20829-20830]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-8340]


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DEPARTMENT OF HEALTH AND HUMAN SERVICES

Food and Drug Administration

[Docket No. FDA-2011-E-0367]


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

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

[[Page 20830]]

DATSCAN 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 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 DATSCAN 
(Ioflupane I-123 injection). DATSCAN is indicated for striatal dopamine 
transporter visualization using single photon emission computed 
tomography brain imaging to assist in the evaluation of adult patients 
with suspected Parkinsonian syndromes. Subsequent to this approval, the 
Patent and Trademark Office received a patent term restoration 
application for DATSCAN (U.S. Patent No. 5,310,912) from GE Healthcare 
Limited, and the Patent and Trademark Office requested FDA's assistance 
in determining this patent's 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 DATSCAN 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 
DATSCAN is 677 days. Of this time, 0 days occurred during the testing 
phase of the regulatory review period, while 677 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 FFD&C Act) (21 U.S.C. 355(i)) became 
effective: not applicable. The applicant claims June 19, 1997, as the 
date the investigational new drug application (IND) became effective. 
However, FDA records indicate that no IND was submitted under 
subsection 505(i) of the FFD&C Act for this human drug product.
    2. The date the application was initially submitted with respect to 
the human drug product under section 505(b) of the FFD&C Act: March 9, 
2009. The applicant claims March 6, 2009, as the date the new drug 
application (NDA) for DATSCAN (NDA 22-454) was initially submitted. 
However, FDA records indicate that NDA 22-454 was submitted on March 9, 
2009.
    3. The date the application was approved: January 14, 2011. FDA has 
verified the applicant's claim that NDA 22-454 was approved on January 
14, 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 
application for patent extension, this applicant seeks 5 years 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. 2012-8340 Filed 4-5-12; 8:45 am]
BILLING CODE 4160-01-P


