Patent No. EP3579690 (titled "Method For Reducing Pathogens In Poultry Hatchery Operations") was filed by Zoetis Services on Feb 2, 2018. The application was issued on Jul 3, 2024.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative |
|---|---|---|
| EW GROUP | Apr 3, 2025 | VOSSIUS & PARTNER |
| EW GROUP | Apr 3, 2025 | VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
Get instant alerts for new documents
Jul 13, 2026
Jul 8, 2026
Jul 8, 2026
Jul 8, 2026
May 22, 2026
May 22, 2026
May 22, 2026
May 22, 2026
May 15, 2026
May 15, 2026
May 15, 2026
May 8, 2026
May 8, 2026
May 8, 2026
May 8, 2026
May 8, 2026
May 8, 2026
May 8, 2026
May 8, 2026
May 8, 2026
May 8, 2026
Apr 21, 2026
Apr 9, 2026
Apr 9, 2026
Apr 9, 2026
Apr 9, 2026
Apr 9, 2026
Apr 9, 2026
Apr 9, 2026
Apr 9, 2026
Apr 9, 2026
Apr 8, 2026
Mar 24, 2026
Mar 12, 2026
Feb 26, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 19, 2026
Feb 4, 2026
Jan 28, 2026
Jan 28, 2026
Jan 27, 2026
Jan 27, 2026
Jan 27, 2026
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Aug 19, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 15, 2025
Aug 13, 2025
Aug 8, 2025
Aug 8, 2025
Apr 15, 2025
Apr 15, 2025
Apr 4, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Apr 3, 2025
Jul 16, 2024
Jun 19, 2024
Jun 6, 2024
Jun 5, 2024
May 29, 2024
May 29, 2024
May 29, 2024
May 29, 2024
Jan 31, 2024
Jan 31, 2024
Jan 31, 2024
Jan 31, 2024
Jan 31, 2024
Jan 31, 2024
Sep 8, 2023
Sep 8, 2023
Sep 8, 2023
Jul 14, 2023
Jul 10, 2023
Jul 10, 2023
Jul 10, 2023
Feb 27, 2023
Feb 27, 2023
Feb 22, 2023
Mar 29, 2020
Mar 29, 2020
Mar 29, 2020
Nov 20, 2019
Sep 18, 2019
Sep 13, 2019
Sep 9, 2019
Sep 2, 2019
Sep 2, 2019
Aug 21, 2019
Aug 7, 2019
Aug 7, 2019
Aug 7, 2019
Aug 7, 2019
Aug 7, 2019
Aug 7, 2019
Aug 7, 2019
Aug 7, 2019
Jun 24, 2019
Sep 6, 2018
Aug 16, 2018
Aug 16, 2018
Aug 16, 2018
Aug 16, 2018
May 15, 2018
May 11, 2018
May 8, 2018
May 8, 2018
May 8, 2018
May 8, 2018
Mar 6, 2018
Feb 19, 2018
Feb 19, 2018
Feb 19, 2018
Feb 19, 2018
Feb 19, 2018
Feb 19, 2018
Feb 19, 2018
Feb 19, 2018
Feb 19, 2018
Feb 19, 2018