The patent EP2707520 was granted to HC Starck on May 2, 2018. The application was originally filed on May 9, 2012 under application number EP12723317A. The patent is currently recorded with a legal status of "Revoked".

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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
| Citation Phase | Reference Text | Link |
|---|---|---|
| OPPOSITION | - AMIR SHIRZADI, "Diffusion bonding", University of Cambridge, (20050000), pages 1 - 10, URL: https://www.phase-trans.msm.cam.ac.uk/2005/Amir/bond.html, XP055561892 | - |
| OPPOSITION | - KAZAKOV N.F., "Diffusion Bonding of Materials", Diffusion Bonding of Materials, (19810000), pages 2 - 17 ; 34-61; 170-187, XP055561877 | - |
| OPPOSITION | - S. SATO et al., "DSCu/SS joining techniques development and testing", JAERI-Research, (19980000), pages 1 - 13, XP055561888 | - |
| OPPOSITION | - W. WERDECKER et al., "Joining of Refactory Metals by Hip Technology", International Journal of Refractory and Hard Metals, (19820000), vol. 1, no. 1, pages 11 - 19, XP055561882 | - |
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OPPO
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Nov 19, 2018
Submission concerning representation
Search/Exam
May 14, 2018
Apr 18, 2018
Apr 12, 2018
(Electronic) Receipt
Search/Exam
Apr 12, 2018
Letter accompanying subsequently filed items
Search/Exam
Apr 12, 2018
Apr 6, 2018
Decision to grant a European patent
Search/Exam
Mar 16, 2018
(Electronic) Receipt
Search/Exam
Mar 16, 2018
Filing of the translations of the claims
Search/Exam
Mar 16, 2018
French translation of claims
Search/Exam
Mar 16, 2018
German translation of the claims
Search/Exam
Mar 16, 2018
Letter accompanying subsequently filed items
Search/Exam
Dec 20, 2017
Dec 20, 2017
Dec 20, 2017
Intention to grant (signatures)
Search/Exam
Dec 20, 2017
Text intended for grant (clean copy)
Search/Exam
Dec 20, 2017
Aug 8, 2017
(Electronic) Receipt
Search/Exam
Aug 8, 2017
Claims
Search/Exam
Aug 8, 2017
Claims
Search/Exam
Aug 8, 2017
Claims
Search/Exam
Aug 8, 2017
Letter accompanying subsequently filed items
Search/Exam
Aug 8, 2017
Apr 3, 2017
Annex to the communication
Search/Exam
Apr 3, 2017
Communication from the Examining Division
Search/Exam
Jan 10, 2017
(Electronic) Receipt
Search/Exam
Jan 10, 2017
Amended claims with annotations
Search/Exam
Jan 10, 2017
Claims
Search/Exam
Jan 10, 2017
Letter accompanying subsequently filed items
Search/Exam
Jan 10, 2017
Sep 6, 2016
Annex to the communication
Search/Exam
Sep 6, 2016
Communication from the Examining Division
Search/Exam
Jun 13, 2016
(Electronic) Receipt
Search/Exam
Jun 13, 2016
Amended claims with annotations
Search/Exam
Jun 13, 2016
Amended description with annotations
Search/Exam
Jun 13, 2016
Claims
Search/Exam
Jun 13, 2016
Description
Search/Exam
Jun 13, 2016
Letter accompanying subsequently filed items
Search/Exam
Jun 13, 2016
May 30, 2016
May 25, 2016
May 24, 2016
Apr 28, 2016
Apr 20, 2016
Apr 18, 2016
Dec 8, 2015
Annex to the communication
Search/Exam
Dec 8, 2015
Communication from the Examining Division
Search/Exam
Dec 2, 2015
Examination started
Search/Exam
Sep 1, 2015
Aug 26, 2015
(Electronic) Receipt
Search/Exam
Aug 26, 2015
Letter accompanying subsequently filed items
Search/Exam
Aug 26, 2015
Jul 21, 2014
(Electronic) Receipt
Search/Exam
Jul 21, 2014
Jul 21, 2014
Amendments received before examination
Search/Exam
Jul 21, 2014
Letter accompanying subsequently filed items
Search/Exam
Jun 4, 2014
Apr 3, 2014
Mar 31, 2014
(Electronic) Receipt
Search/Exam
Mar 31, 2014
Letter accompanying subsequently filed items
Search/Exam
Mar 31, 2014
Mar 5, 2014
Refund of fees
Search/Exam
Feb 19, 2014
Feb 11, 2014
(Electronic) Receipt
Search/Exam
Feb 11, 2014
Letter accompanying subsequently filed items
Search/Exam
Feb 11, 2014
Letter concerning fees and payments
Search/Exam
Jan 17, 2014
Jan 15, 2014
Communication to designated inventor
Search/Exam
Jan 15, 2014
Communication to designated inventor
Search/Exam
Dec 6, 2013
Nov 26, 2013
(Electronic) Receipt
Search/Exam
Nov 26, 2013
Nov 26, 2013
Matter concerning the application
Search/Exam
Nov 26, 2013
Request for entry into the European phase
Search/Exam
Nov 20, 2013
Nov 20, 2013
Nov 7, 2013
Sep 20, 2013
Information on entry into European phase
Search/Exam
Jul 25, 2013
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Written opinion
PCT2
Apr 24, 2013
Apr 24, 2013
Apr 15, 2013
Notification of election of EPO
Search/Exam
Apr 4, 2013
Apr 4, 2013
Apr 4, 2013
Notification of the recording of a change
Search/Exam
Mar 20, 2013
Mar 20, 2013
Mar 11, 2013
Mar 11, 2013
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PCT demand form
PCT2
Mar 11, 2013
Mar 11, 2013
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Mar 11, 2013
Dec 6, 2012
Dec 6, 2012
Nov 15, 2012
Copy of the international search report
Search/Exam
Nov 15, 2012
Published international application - A1
Search/Exam
Jul 11, 2012
Jul 11, 2012
Jul 11, 2012
May 18, 2012
Abstract
PCTISA
May 18, 2012
Claims
PCTISA
May 18, 2012
Description
PCTISA
May 18, 2012
Drawings
PCTISA