Document ID: FDA-2020-E-2260-0004
Agency: fda
Document Type: Notice
Title: Determination of Regulatory Review Period for Purposes of Patent Extension; THEROX DOWNSTREAM SYSTEM
Posted Date: 2022-08-31T04:00Z

[Federal Register Volume 87, Number 168 (Wednesday, August 31, 2022)]
[Notices]
[Pages 53474-53475]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-18754]

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DEPARTMENT OF HEALTH AND HUMAN SERVICES

Food and Drug Administration

[Docket Nos. FDA-2020-E-2259; FDA-2020-E-2260; and FDA-2020-E-2261]

Determination of Regulatory Review Period for Purposes of Patent 
Extension; THEROX DOWNSTREAM SYSTEM

AGENCY: Food and Drug Administration, HHS.

ACTION: Notice.

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SUMMARY: The Food and Drug Administration (FDA or the Agency) has 
determined the regulatory review period for THEROX DOWNSTREAM SYSTEM 
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 the U.S. Patent and Trademark Office 
(USPTO), Department of Commerce, for the extension of a patent which 
claims that medical device.

DATES: Anyone with knowledge that any of the dates as published (see 
SUPPLEMENTARY INFORMATION) are incorrect must submit either electronic 
or written comments and ask for a redetermination by October 31, 2022. 
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 February 27, 2023. See 
``Petitions'' in the SUPPLEMENTARY INFORMATION section for more 
information.

ADDRESSES: You may submit comments as follows. Please note that late, 
untimely filed comments will not be considered. The https://www.regulations.gov electronic filing system will accept comments until 
11:59 p.m. Eastern Time at the end of October 31, 2022. Comments 
received by mail/hand delivery/courier (for written/paper submissions) 
will be considered timely if they are received on or before that date.

Electronic Submissions

    Submit electronic comments in the following way:
     Federal eRulemaking Portal: https://www.regulations.gov. 
Follow the instructions for submitting comments. Comments submitted 
electronically, including attachments, to https://www.regulations.gov 
will be posted to the docket unchanged. Because your comment will be 
made public, you are solely responsible for ensuring that your comment 
does not include any confidential information that you or a third party 
may not wish to be posted, such as medical information, your or anyone 
else's Social Security number, or confidential business information, 
such as a manufacturing process. Please note that if you include your 
name, contact information, or other information that identifies you in 
the body of your comments, that information will be posted on https://www.regulations.gov.
     If you want to submit a comment with confidential 
information that you do not wish to be made available to the public, 
submit the comment as a written/paper submission and in the manner 
detailed (see ``Written/Paper Submissions'' and ``Instructions'').

Written/Paper Submissions

    Submit written/paper submissions as follows:
     Mail/Hand Delivery/Courier (for written/paper 
submissions): Dockets Management Staff (HFA-305), Food and Drug 
Administration, 5630 Fishers Lane, Rm. 1061, Rockville, MD 20852.
     For written/paper comments submitted to the Dockets 
Management Staff, FDA will post your comment, as well as any 
attachments, except for information submitted, marked and identified, 
as confidential, if submitted as detailed in ``Instructions.''
    Instructions: All submissions received must include the Docket Nos. 
FDA-2020-E-2259; FDA-2020-E-2260; and FDA-2020-E-2261 for 
``Determination of Regulatory Review Period for Purposes of Patent 
Extension; THEROX DOWNSTREAM SYSTEM.'' Received comments, those filed 
in a timely manner (see ADDRESSES), will be placed in the docket and, 
except for those submitted as ``Confidential Submissions,'' publicly 
viewable at https://www.regulations.gov or at the Dockets Management 
Staff between 9 a.m. and 4 p.m., Monday through Friday, 240-402-7500.
     Confidential Submissions--To submit a comment with 
confidential information that you do not wish to be made publicly 
available, submit your comments only as a written/paper submission. You 
should submit two copies total. One copy will include the information 
you claim to be confidential with a heading or cover note that states 
``THIS DOCUMENT CONTAINS CONFIDENTIAL INFORMATION.'' The Agency will 
review this copy, including the claimed confidential information, in 
its consideration of comments. The second copy, which will have the 
claimed confidential information redacted/blacked out, will be 
available for public viewing and posted on https://www.regulations.gov. 
Submit both copies to the Dockets Management Staff. If you do not wish 
your name and contact information to be made publicly available, you 
can provide this information on the cover sheet and not in the body of 
your comments and you must identify this information as 
``confidential.'' Any information marked as ``confidential'' will not 
be disclosed except in accordance with Sec.  10.20 (21 CFR 10.20) and 
other applicable disclosure law. For more information about FDA's 
posting of comments to public dockets, see 80 FR 56469, September 18, 
2015, or access the information at: https://www.govinfo.gov/content/pkg/FR-2015-09-18/pdf/2015-23389.pdf.
    Docket: For access to the docket to read background documents or 
the electronic and written/paper comments received, go to https://www.regulations.gov and insert the docket numbers, found in brackets in 
the heading of this document, into the ``Search'' box and follow the 
prompts and/or go to the Dockets Management Staff, 5630 Fishers Lane, 
Rm. 1061, Rockville, MD 20852, 240-402-7500.

FOR FURTHER INFORMATION CONTACT: Beverly Friedman, Office of Regulatory 
Policy, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 
51, Rm. 6250, Silver Spring, MD 20993, 301-796-3600.

SUPPLEMENTARY INFORMATION:

[[Page 53475]]

I. Background

    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 medical devices, the testing 
phase begins with a clinical investigation of the device and runs until 
the approval phase begins. The approval phase starts with the initial 
submission of an application to market the device and continues until 
permission to market the device is granted. Although only a portion of 
a regulatory review period may count toward the actual amount of 
extension that the Director of USPTO may award (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 medical device will include all of the 
testing phase and approval phase as specified in 35 U.S.C. 
156(g)(3)(B).
    FDA has approved for marketing the medical device THEROX DOWNSTREAM 
SYSTEM. It is indicated for the preparation and delivery of 
SuperSaturated Oxygen Therapy to targeted ischemic regions perfused by 
the patient's left anterior descending coronary artery immediately 
following revascularization by means of percutaneous coronary 
intervention with stenting that has been completed within 6 hours after 
the onset of anterior acute myocardial infarction symptoms caused by a 
left anterior descending artery infarct lesion. Subsequent to this 
approval, the USPTO received patent term restoration applications for 
THEROX DOWNSTREAM SYSTEM (U.S. Patent Nos. 6,582,387; 7,820,102; and 
8,264,564) from TherOx Inc., and the USPTO requested FDA's assistance 
in determining the patents' eligibility for patent term restoration. In 
a letter dated May 24, 2021, FDA advised the USPTO that this medical 
device had undergone a regulatory review period and that the approval 
of THEROX DOWNSTREAM SYSTEM represented the first permitted commercial 
marketing or use of the product. Thereafter, the USPTO requested that 
FDA determine the product's regulatory review period.

II. Determination of Regulatory Review Period

    FDA has determined that the applicable regulatory review period for 
THEROX DOWNSTREAM SYSTEM is 7,386 days. Of this time, 6,824 days 
occurred during the testing phase of the regulatory review period, 
while 562 days occurred during the approval phase. These periods of 
time were derived from the following dates:
    1. The date an exemption for this device, under section 520(g) of 
the Federal Food, Drug, and Cosmetic Act (FD&C Act) (21 U.S.C. 
360j(g)), became effective: January 13, 1999. The applicant claims that 
the investigational device exemptions (IDEs) required under section 
520(g) of the FD&C Act for human tests to begin became effective on 
November 4, 1998, or January 28, 2012. However, FDA records indicate 
that the IDE was determined substantially complete for clinical studies 
to have begun on January 13, 1999, which represents the IDE effective 
date of the earliest IDE received.
    2. The date an application was initially submitted with respect to 
the device under section 515 of the FD&C Act (21 U.S.C. 360e): 
September 18, 2017. The applicant claims September 21, 2017, as the 
date the premarket approval application (PMA) for THEROX DOWNSTREAM 
SYSTEM (PMA P170027) was initially submitted. However, FDA records 
indicate that PMA P170027 was initially submitted on September 18, 
2017.
    3. The date the application was approved: April 2, 2019. FDA has 
verified the applicant's claim that PMA P170027 was approved on April 
2, 2019.
    This determination of the regulatory review period establishes the 
maximum potential length of a patent extension. However, the USPTO 
applies several statutory limitations in its calculations of the actual 
period for patent extension. In its applications for patent extension, 
this applicant seeks 991 days, 1,591 days, or 1,826 days of patent term 
extension.

III. Petitions

    Anyone with knowledge that any of the dates as published are 
incorrect may submit either electronic or written comments and, under 
21 CFR 60.24, ask for a redetermination (see DATES). Furthermore, as 
specified in Sec.  60.30 (21 CFR 60.30), any interested person may 
petition FDA for a determination regarding whether the applicant for 
extension acted with due diligence during the regulatory review period. 
To meet its burden, the petition must comply with all the requirements 
of Sec.  60.30, including but not limited to: must be timely (see 
DATES), must be filed in accordance with Sec.  10.20, must contain 
sufficient facts to merit an FDA investigation, and must certify that a 
true and complete copy of the petition has been served upon the patent 
applicant. (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.
    Submit petitions electronically to https://www.regulations.gov at 
Docket Nos. FDA-2013-S-0610. Submit written petitions (two copies are 
required) to the Dockets Management Staff (HFA-305), Food and Drug 
Administration, 5630 Fishers Lane, Rm. 1061, Rockville, MD 20852.

    Dated: August 25, 2022.
Lauren K. Roth,
Associate Commissioner for Policy.
[FR Doc. 2022-18754 Filed 8-30-22; 8:45 am]
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