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The patent EP2598579 was granted to Schaefer Kalk on Sep 11, 2024. The application was filed on Jul 28, 2011 under application number EP11763837A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 | Opposition Status |
|---|---|---|---|
| AMORPHICAL | Jun 11, 2025 | JACOBI | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1151966 |
| DESCRIPTION | WO2008122358 |
| EXAMINATION | US2008227901 |
| INTERNATIONAL-SEARCH-REPORT | WO2008122358 |
| OPPOSITION | US2008227901 |
| OPPOSITION | US4237147 |
| OPPOSITION | WO2008122358 |
| OPPOSITION | WO2009053967 |
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.
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Decision to grant a European patent
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Jul 19, 2024
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Notice on debiting of fees
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Jul 12, 2024
(Electronic) Receipt
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Jul 12, 2024
English translation of the claims
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Jul 12, 2024
Filing of the translations of the claims
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Jul 12, 2024
French translation of claims
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Intention to grant (signatures)
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Mar 18, 2024
Text intended for grant (clean copy)
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(Electronic) Receipt
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Feb 7, 2024
Amended claims with annotations
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Claims
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Feb 7, 2024
Description
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Summary of subsequently filed documents
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Dec 7, 2023
Annex to the communication
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Dec 7, 2023
Communication from the Examining Division
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Notice of appeal
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Grounds for the decision (Annex)
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Jul 19, 2022
Means of redress
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Refund of fees
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Letter accompanying subsequently filed items
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Letter concerning fees and payments
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Letter accompanying subsequently filed items
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Matter concerning the application
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Intention to grant (signatures)
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Dec 22, 2021
Text intended for grant (clean copy)
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Annex to a communication
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Letter dealing with oral proceedings
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Oct 22, 2021
Amended claims with annotations
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Annex
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Oct 22, 2021
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Document concerning representation
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Letter dealing with oral proceedings
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Advice of delivery
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Acknowledgement of a document
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Annex to the communication
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Preparation for oral proceedings
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Summons to attend oral proceedings
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Annex to the communication
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Jun 7, 2016
Communication from the Examining Division
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Examination started
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Payment of fees and costs
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Payment of fees and costs
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Payment of fees and costs
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Submission concerning representation
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Communication to designated inventor
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Communication to designated inventor
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Feb 28, 2013
Priority search results copy provided by EPO
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Request for entry into the European phase
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Information on entry into European phase
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Copy of the international search report
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Copy of the international search report
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Notification of the recording of a change
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Published international application - A2
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Abstract
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Claims
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Description
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