Last Updated: August 9, 2026

PROQUIN XR Drug Patent Profile


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When do Proquin Xr patents expire, and what generic alternatives are available?

Proquin Xr is a drug marketed by Depomed Inc and is included in one NDA.

The generic ingredient in PROQUIN XR is ciprofloxacin hydrochloride. There are thirty-four drug master file entries for this compound. Fifty-four suppliers are listed for this compound. Additional details are available on the ciprofloxacin hydrochloride profile page.

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US Patents and Regulatory Information for PROQUIN XR

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Depomed Inc PROQUIN XR ciprofloxacin hydrochloride TABLET, EXTENDED RELEASE;ORAL 021744-001 May 19, 2005 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Expired US Patents for PROQUIN XR

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Depomed Inc PROQUIN XR ciprofloxacin hydrochloride TABLET, EXTENDED RELEASE;ORAL 021744-001 May 19, 2005 5,972,389 ⤷  Start Trial
Depomed Inc PROQUIN XR ciprofloxacin hydrochloride TABLET, EXTENDED RELEASE;ORAL 021744-001 May 19, 2005 6,488,962 ⤷  Start Trial
Depomed Inc PROQUIN XR ciprofloxacin hydrochloride TABLET, EXTENDED RELEASE;ORAL 021744-001 May 19, 2005 6,635,280 ⤷  Start Trial
Depomed Inc PROQUIN XR ciprofloxacin hydrochloride TABLET, EXTENDED RELEASE;ORAL 021744-001 May 19, 2005 6,340,475 ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

International Patents for PROQUIN XR

See the table below for patents covering PROQUIN XR around the world.

Country Patent Number Title Estimated Expiration
Austria 257376 ⤷  Start Trial
Australia 4428097 ⤷  Start Trial
Australia 741760 ⤷  Start Trial
Canada 2266589 FORMES GALENIQUES ORALES RETENUES DANS L'ESTOMAC, POUR LA LIBERATION CONTROLEE DE MEDICAMENTS FAIBLEMENT SOLUBLES ET DE SUBSTANCE INSOLUBLE (GASTRIC-RETENTIVE, ORAL DRUG DOSAGE FORMS FOR THE CONTROLLED-RELEASE OF SPARINGLY SOLUBLE DRUGS AND INSOLUBLE MATTER) ⤷  Start Trial
Germany 69727153 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for PROQUIN XR

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
1429780 13C0012 France ⤷  Start Trial PRODUCT NAME: COMBINAISON DE CIPROFLOXACINE ET DE DEXAMETHASONE, EN PARTICULIER DE CHLORHYDRATE DE CIPROFLOXACINE ET DE DEXAMETHASONE; NAT. REGISTRATION NO/DATE: NL 41308 20121214; FIRST REGISTRATION: 48976 20120808
1429780 SPC/GB12/058 United Kingdom ⤷  Start Trial PRODUCT NAME: A COMBINATION OF CIPROFLOXACIN AND DEXAMETHASONE, PREFERABLY CIPROFLOXACIN HYDROCHLORIDE AND DEXAMETHASONE; REGISTERED: DK DE/11/3337/001/DC 20120808; UK PL000649/0381-0001 20121003
1429780 122012000070 Germany ⤷  Start Trial PRODUCT NAME: KOMBINATION AUS CIPROFLOXACIN UND DEXAMETHASON, INSBESONDERE CIPROFLOXACINHYDROCHLORID UND DEXAMETHASON; NAT. REGISTRATION NO/DATE: 85150.00. 00 20120830; FIRST REGISTRATION: DAENEMARK 48976 20120808
1429780 132013902137451 Italy ⤷  Start Trial PRODUCT NAME: CIPROFLOXACINA E DESAMETASONE(CILODEX); AUTHORISATION NUMBER(S) AND DATE(S): 48976, 20120810;041182015/M, 20121106
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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