The patent EP2552210 was granted to Supernus Pharmaceuticals on Dec 20, 2017. The application was originally filed on Mar 30, 2011 under application number EP11763348A. 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.
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| Citation Phase | Reference Text | Link |
|---|---|---|
| OPPOSITION | - "Chapter 4: Imidazoline Derived Amphoterics", LOMAX Eric G., Amphoteric surfactants. 2nd ed., Marcel Dekker, Inc., (19960000), pages 191, 198 - 200, ISBN 0-8247-9392-7, XP055520942 | - |
| OPPOSITION | - MAULDING H. V. et al, "Solvolysis of a Substituted Imidazoline, Mazindol", Journal of Pharmaceutical Sciences, (19751100), vol. 64, no. 11, pages 1833 - 1838, XP055520940 | - |
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Mar 13, 2024
Mar 13, 2024
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(Electronic) Receipt
Appeal
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Dec 6, 2022
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Document concerning representation
Search/Exam
Oct 14, 2022
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(Electronic) Receipt
Appeal
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Appeal
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Reply to appeal
Appeal
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Jun 10, 2020
(Electronic) Receipt
Appeal
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Mar 26, 2020
(Electronic) Receipt
Appeal
Mar 26, 2020
Notice of appeal
Appeal
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Claims
OPPO
Nov 13, 2019
Claims
OPPO
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OPPO
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Claims
OPPO
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Jan 24, 2018
Communication from the Legal Division
Search/Exam
Jan 5, 2018
Dec 19, 2017
Annex
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Dec 19, 2017
Letter to the Legal Division
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Dec 19, 2017
Payment of fees and costs
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Nov 23, 2017
Decision to grant a European patent
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Nov 14, 2017
(Electronic) Receipt
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Nov 14, 2017
Filing of the translations of the claims
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Nov 14, 2017
Letter accompanying subsequently filed items
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Sep 14, 2017
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Intention to grant (signatures)
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Sep 14, 2017
Text intended for grant (clean copy)
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Sep 14, 2017
Aug 22, 2017
Jun 12, 2017
(Electronic) Receipt
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Jun 12, 2017
Claims
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Jun 12, 2017
French translation of claims
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Jun 12, 2017
German translation of the claims
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Jun 12, 2017
Letter accompanying subsequently filed items
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Jun 12, 2017
Mar 14, 2017
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Mar 14, 2017
Intention to grant (signatures)
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Mar 14, 2017
Text intended for grant (clean copy)
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Mar 14, 2017
Aug 12, 2015
(Electronic) Receipt
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Aug 12, 2015
Amended claims with annotations
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Aug 12, 2015
Claims
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Aug 12, 2015
Letter accompanying subsequently filed items
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Aug 12, 2015
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Mar 13, 2015
Annex to the communication
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Mar 13, 2015
Communication from the Examining Division
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Mar 5, 2015
Examination started
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Jul 15, 2014
(Electronic) Receipt
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Jul 15, 2014
Jul 15, 2014
Amended claims with annotations
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Jul 15, 2014
Amendments received before examination
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Jul 15, 2014
Letter accompanying subsequently filed items
Search/Exam
Mar 31, 2014
Registration under Rule 23 EPC
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Mar 12, 2014
Annex
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Mar 12, 2014
General authorisation
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Mar 12, 2014
Letter to the Legal Division
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Jan 9, 2014
Dec 12, 2013
Dec 12, 2013
European search opinion
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Dec 12, 2013
Supplementary European search report
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Jul 23, 2013
Search started
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Jan 9, 2013
Nov 8, 2012
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Communication to designated inventor
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Nov 6, 2012
Communication to designated inventor
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Oct 16, 2012
Oct 11, 2012
(Electronic) Receipt
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Oct 11, 2012
Oct 11, 2012
Oct 11, 2012
Amendments received before examination
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Oct 11, 2012
Request for entry into the European phase
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Aug 10, 2012
Information on entry into European phase
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Oct 25, 2011
Oct 6, 2011
Copy of the international search report
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Oct 6, 2011
Published international application - A1
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