[Federal Register: September 28, 2004 (Volume 69, Number 187)]
[Notices]               
[Page 57937-57938]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr28se04-69]                         

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DEPARTMENT OF HEALTH AND HUMAN SERVICES

Food and Drug Administration

[Docket No. 2004E-0023]

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

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 REYATAZ 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 
that claims that human drug product.

ADDRESSES: Submit written comments and petitions to the Division of 
Dockets Management (HFA-305), Food and Drug Administration, 5630 
Fishers Lane, rm. 1061, Rockville, MD 20852. Submit electronic comments 
to http://frwebgate.access.gpo.gov/cgi-bin/leaving.cgi?from=leavingFR.html&log=linklog&to=http://www.fda.gov/dockets/ecomments.


FOR FURTHER INFORMATION CONTACT: Claudia V. Grillo, Office of 
Regulatory Policy (HFD-013), Food and Drug Administration, 5600 Fishers 
Lane, Rockville, MD 20857, 240-453-6699.

SUPPLEMENTARY INFORMATION: The Drug Price Competition and Patent Term 
Restoration Act of 1984 (Public Law 98-417) and the Generic Animal Drug 
and Patent Term Restoration Act (Public Law 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 REYATAZ 
(atazanavir sulfate). REYATAZ is indicated in combination with other

[[Page 57938]]

antiretroviral agents for the treatment of HIV-1 infection. Subsequent 
to this approval, the Patent and Trademark Office received a patent 
term restoration application for REYATAZ (U.S. Patent No. 5,849,911) 
from Novartis Corp., and the Patent and Trademark Office requested 
FDA's assistance in determining this patent's eligibility for patent 
term restoration. In a letter dated April 6, 2004, FDA advised the 
Patent and Trademark Office that this human drug product had undergone 
a regulatory review period and that the approval of REYATAZ represented 
the first permitted commercial marketing or use of the product. Shortly 
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 
REYATAZ is 1,723 days. Of this time, 1,540 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 (the act) (21 U.S.C. 355(i)) became effective: 
October 3, 1998. The applicant claims October 2, 1998, as the date the 
investigational new drug application (IND) became effective. However, 
FDA records indicate that the IND effective date was October 3, 1998, 
which was 30 days after FDA receipt of the IND.
    2. The date the application was initially submitted with respect to 
the human drug product under section 505(b) of the act: December 20, 
2002. FDA has verified the applicant's claim that the new drug 
application (NDA) for REYATAZ (NDA 21-567) was initially submitted on 
December 20, 2002.
    3. The date the application was approved: June 20, 2003. FDA has 
verified the applicant's claim that NDA 21-567 was approved on June 20, 
2003.
    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 72 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) written or electronic comments and ask for a redetermination 
by November 29, 2004. 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 March 
28, 2005. 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.
    Comments and petitions should be submitted to the Division of 
Dockets Management. Three copies of any mailed information are to be 
submitted, except that individuals may submit one copy. Copies are to 
be identified with the docket number found in brackets in the heading 
of this document. Comments and petitions may be seen in the Division of 
Dockets Management between 9 a.m. and 4 p.m., Monday through Friday.

    Dated: August 30, 2004.
Jane A. Axelrad,
Associate Commissioner for Policy, Center for Drug Evaluation and 
Research.
[FR Doc. 04-21625 Filed 9-27-04; 8:45 am]

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