Extract from the Register of European Patents

EP About this file: EP4577521

EP4577521 - ANIMAL CONTRACEPTIVE [Right-click to bookmark this link]
StatusRequest for examination was made
Status updated on  29.05.2025
Database last updated on 28.03.2026
FormerThe international publication has been made
Status updated on  23.03.2024
Most recent event   Tooltip10.10.2025Change: Validation statespublished on 12.11.2025  [2025/46]
10.10.2025Amendment by applicant 
10.10.2025Change - extension statespublished on 12.11.2025  [2025/46]
Applicant(s)For all designated states
Corona Feed Additives, L.L.C.
P.O. Box 5100
Clovis, NM 88102 / US
[2025/27]
Inventor(s)01 / LOPER, Daniel August
Clovis, NM 88101 / US
02 / LOPER, Daniel Carl
Clovis, NM 88101 / US
03 / FAILS, Bradley Dean
Dublin, TX 76446 / US
 [2025/27]
Representative(s)Page White Farrer
Bedford House
21a John Street
London WC1N 2BF / GB
[2025/27]
Application number, filing date23866253.015.09.2023
[2025/27]
WO2023US32906
Priority number, dateUS20221794589815.09.2022         Original published format: US202217945898
[2025/27]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report
No.:WO2024059287
Date:21.03.2024
Language:EN
[2024/12]
Type: A2 Application without search report 
No.:EP4577521
Date:02.07.2025
Language:EN
The application published by WIPO in one of the EPO official languages on 21.03.2024 takes the place of the publication of the European patent application.
[2025/27]
Search report(s)International search report - published on:US02.05.2024
ClassificationIPC:C07C251/24, A61P15/18, C07C249/02, C07C251/16
[2025/27]
CPC:
A61K31/11 (EP); A61K45/06 (EP)
C-Set:
A61K31/11, A61K2300/00 (EP)
Designated contracting statesAL,   AT,   BE,   BG,   CH,   CY,   CZ,   DE,   DK,   EE,   ES,   FI,   FR,   GB,   GR,   HR,   HU,   IE,   IS,   IT,   LI,   LT,   LU,   LV,   MC,   ME,   MK,   MT,   NL,   NO,   PL,   PT,   RO,   RS,   SE,   SI,   SK,   SM,   TR [2025/27]
TitleGerman:KONTRAZEPTIVUM FÜR TIERE[2025/27]
English:ANIMAL CONTRACEPTIVE[2025/27]
French:CONTRACEPTIF POUR ANIMAUX[2025/27]
Entry into regional phase28.03.2025National basic fee paid 
28.03.2025Search fee paid 
28.03.2025Designation fee(s) paid 
28.03.2025Examination fee paid 
Examination procedure28.03.2025Examination requested  [2025/27]
09.10.2025Amendment by applicant (claims and/or description)
Fees paidRenewal fee
19.09.2025Renewal fee patent year 03
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Cited inInternational search[X] US2022233467  (LOPER DANIEL AUGUST et al.) [X] 1-20 * - entire document especially abstract, Table 2, and para [0022] *
 [L] US6212819  (EDWARDS RICHARD H et al.) [L] 1-20 * - entire document especially col 2 *
 [A] US2022227869  (DUVAUX ODILE et al.) [A] 1-20 * - entire document *
 [A] US2010069344  (WANG SHAOMENG et al.) [A] 1-20 * - entire document *
 [A] US2020359653  (JOHNSON A BRUCE et al.) [A] 1-20 * - entire document *
 [A] US2019328004  (JOHNSON BRUCE et al.) [A] 1-20 * - entire document *
 [A] US2006008512  (HOOGE DANNY M et al.) [A] 1-20 * - entire document *
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