Federal Register / Vol. 88, No. 228 / Wednesday, November 29, 2023 / Notices 83407 

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 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 USPTO 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 has approved for marketing the 

human drug product, Olinvyk 

(oliceridine fumarate) indicated for the 

management of acute pain severe 

enough to require an intravenous opioid 

analgesic and for whom alternative 

treatments are inadequate. Subsequent 

to this approval, the USPTO received 

patent term restoration applications for 

Olinvyk (U.S. Patent Nos. 8,835,488; 

9,309,234; 9,642,842) from Trevena, 

Inc., and the USPTO requested FDA’s 

assistance in determining the patents’ 

eligibility for patent term restoration. In 

a letter dated August 24, 2022, FDA 

advised the USPTO that this human 

drug product had undergone a 

regulatory review period and that the 

approval of Olinvyk 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 

Olinvyk is 3,206 days. Of this time, 

2,112 days occurred during the testing 

phase of the regulatory review period, 

while 1,094 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 (FD&C Act) (21 U.S.C. 

355(i)) became effective: January 22, 

2012. The applicant claims January 24, 

2012, as the date the investigational new 

drug application (IND) became effective. 

However, FDA records indicate that the 

IND effective date was January 22, 2012, 

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 

of the FD&C Act: November 2, 2017. 

FDA has verified the applicant’s claim 

that the new drug application (NDA) for 

Olinvyk (NDA 210730) was initially 

submitted on November 2, 2017. 

3. The date the application was 

approved or the effective date of 

approval for a drug product 

recommended for control under the 

Controlled Substances Act: October 30, 

2020. FDA has verified the applicant’s 

claim that NDA 210730 was approved 

on August 7, 2020, and the date of 

issuance of the interim final rule 

controlling the drug under section 201(j) 

of the Controlled Substances Act was 

October 30, 2020. 

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 951 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 § 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 

§ 60.30, including but not limited to: 

must be timely (see DATES), must be 

filed in accordance with § 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 

No. 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: November 24, 2023. 

Lauren K. Roth, 

Associate Commissioner for Policy. 

[FR Doc. 2023–26253 Filed 11–28–23; 8:45 am] 

BILLING CODE 4164–01–P 

DEPARTMENT OF HEALTH AND 

HUMAN SERVICES 

Food and Drug Administration 

[Docket Nos. FDA–2022–E–2023, FDA– 

2022–E–2024, and FDA–2022–E–2025] 

Determination of Regulatory Review 

Period for Purposes of Patent 

Extension; PYLARIFY 

AGENCY: Food and Drug Administration, 

HHS. 

ACTION: Notice. 

SUMMARY: The Food and Drug 

Administration (FDA or the Agency) has 

determined the regulatory review period 

for PYLARIFY 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 

patents which claim that human drug 

product. 

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 January 29, 2024. 

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 

May 28, 2024. 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 


ddrumheller on DSK120RN23PROD with NOTICES1
83408 Federal Register / Vol. 88, No. 228 / Wednesday, November 29, 2023 / Notices 

considered. The https://

www.regulations.gov electronic filing 

system will accept comments until 

11:59 p.m. Eastern Time at the end of 

January 29, 2024. 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– 

2022–E–2023, FDA–2022–E–2024, and 

FDA–2022–E–2025 for ‘‘Determination 

of Regulatory Review Period for 

Purposes of Patent Extension; 

PYLARIFY.’’ 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 § 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 number, 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: 

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 or biologic 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 USPTO 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 has approved for marketing the 

human drug product, PYLARIFY 

(piflufolastat F18). PYLARIFY is 

indicated for positron emission 

tomography of prostate-specific 

membrane antigen positive lesions in 

men with prostate cancer: 

• with suspected metastasis who are 

candidates for initial definitive therapy. 

• with suspected recurrence based on 

elevated serum prostate-specific antigen 

level. 

Subsequent to this approval, the 

USPTO received patent term restoration 

applications for PYLARIFY (U.S. Patent 

Nos. 8,487,129; 8,778,305; and 

9,861,713) from Progenics 

Pharmaceuticals, Inc., and the USPTO 

requested FDA’s assistance in 

determining the patents’ eligibility for 

patent term restoration. In a letter dated 

September 13, 2022, FDA advised the 

USPTO that this human drug product 

had undergone a regulatory review 

period and that the approval of 

PYLARIFY 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 

PYLARIFY is 2,681 days. Of this time, 


ddrumheller on DSK120RN23PROD with NOTICES1
Federal Register / Vol. 88, No. 228 / Wednesday, November 29, 2023 / Notices 83409 

2,441 days occurred during the testing 

phase of the regulatory review period, 

while 240 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 (FD&C Act) (21 U.S.C. 

355(i)) became effective: January 24, 

2014. The applicant claims January 18, 

2014, as the date the investigational new 

drug application (IND) became effective. 

However, FDA records indicate that the 

IND effective date was January 24, 2014, 

which was the first date after receipt of 

the IND that the investigational studies 

were allowed to proceed. 

2. The date the application was 

initially submitted with respect to the 

human drug product under section 505 

of the FD&C Act: September 29, 2020. 

FDA has verified the applicant’s claim 

that the new drug application (NDA) for 

PYLARIFY (NDA 214793) was initially 

submitted on September 29, 2020. 

3. The date the application was 

approved: May 26, 2021. FDA has 

verified the applicant’s claim that NDA 

214793 was approved on May 26, 2021. 

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 736 days, 1,373 

days or 1,463 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 § 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 

§ 60.30, including but not limited to: 

must be timely (see DATES), must be 

filed in accordance with § 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 

No. 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: November 24, 2023. 

Lauren K. Roth, 

Associate Commissioner for Policy. 

[FR Doc. 2023–26261 Filed 11–28–23; 8:45 am] 

BILLING CODE 4164–01–P 

DEPARTMENT OF HEALTH AND 

HUMAN SERVICES 

Food and Drug Administration 

[Docket No. FDA–2022–E–0671] 

Determination of Regulatory Review 

Period for Purposes of Patent 

Extension; Azstarys 

AGENCY: Food and Drug Administration, 

HHS. 

ACTION: Notice. 

SUMMARY: The Food and Drug 

Administration (FDA or the Agency) has 

determined the regulatory review period 

for Azstarys 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 the U.S. Patent and 

Trademark Office (USPTO), Department 

of Commerce, for the extension of a 

patent which claims that human drug 

product. 

DATES: Anyone with knowledge that any 

of the dates as published (see 

SUPPLEMENTARY INFORMATION) are 

incorrect may submit either electronic 

or written comments and ask for a 

redetermination by January 29, 2024. 

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 

May 27, 2024. 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 

January 29, 2024. 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 No. FDA– 

2022–E–0671 for ‘‘Determination of 

Regulatory Review Period for Purposes 

of Patent Extension; AZSTARYS.’’ 

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 


ddrumheller on DSK120RN23PROD with NOTICES1