The patent EP2442821 was granted to Acerus Pharmaceuticals USA on Feb 12, 2025. The application was originally filed on Jun 15, 2010 under application number EP10790053A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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.
Get a free citation report including examiner, opposition, and international search citations.
Get Citation ReportThe 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
Jan 16, 2025
Jan 6, 2025
Jan 6, 2025
Jan 6, 2025
Jun 18, 2024
Jun 18, 2024
Jun 18, 2024
Jun 18, 2024
Mar 18, 2024
Mar 18, 2024
Mar 12, 2024
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Means of redress
OPPO
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Sep 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jul 13, 2023
Jan 18, 2023
Jan 13, 2023
Jan 13, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 9, 2023
Jan 2, 2023
Jan 2, 2023
Jan 2, 2023
Jan 2, 2023
Jan 2, 2023
Jan 2, 2023
Jan 2, 2023
Oct 10, 2022
Oct 10, 2022
Oct 6, 2022
Oct 4, 2022
Oct 4, 2022
Oct 4, 2022
Sep 23, 2022
Sep 23, 2022
Sep 23, 2022
Jul 18, 2022
Jul 18, 2022
Jul 18, 2022
Jun 3, 2022
Jun 3, 2022
May 19, 2022
(Electronic) Receipt
Appeal
May 19, 2022
May 17, 2022
May 16, 2022
May 3, 2022
May 3, 2022
Apr 28, 2022
(Electronic) Receipt
Appeal
Apr 26, 2022
Apr 26, 2022
Apr 26, 2022
Apr 25, 2022
(Electronic) Receipt
Appeal
Apr 25, 2022
Apr 25, 2022
Apr 22, 2022
Apr 14, 2022
(Electronic) Receipt
Appeal
Apr 14, 2022
Apr 14, 2022
Mar 31, 2022
Mar 31, 2022
Mar 9, 2022
Mar 9, 2022
Jul 14, 2021
Jul 14, 2021
Jul 9, 2021
May 11, 2020
May 4, 2020
(Electronic) Receipt
Appeal
May 4, 2020
May 4, 2020
Reply to appeal
Appeal
Mar 16, 2020
Feb 21, 2020
Feb 21, 2020
Feb 13, 2020
Jan 14, 2020
Refund of fees
Appeal
Jan 10, 2020
Jan 9, 2020
(Electronic) Receipt
Appeal
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Claims
Appeal
Jan 9, 2020
Jan 9, 2020
Jan 9, 2020
Jan 6, 2020
(Electronic) Receipt
Appeal
Jan 6, 2020
Jan 6, 2020
Withdrawal of an appeal
Appeal
Nov 18, 2019
Refund of fees
Appeal
Nov 13, 2019
Nov 7, 2019
(Electronic) Receipt
Appeal
Nov 7, 2019
(Electronic) Receipt
Appeal
Nov 7, 2019
Nov 7, 2019
Nov 7, 2019
Notice of appeal
Appeal
Nov 7, 2019
Notice of appeal
Appeal
Oct 24, 2019
Oct 10, 2019
Oct 2, 2019
(Electronic) Receipt
Appeal
Oct 2, 2019
Oct 2, 2019
Oct 2, 2019
Notice of appeal
Appeal
Sep 26, 2019
Sep 17, 2019
Sep 17, 2019
Sep 16, 2019
Sep 16, 2019
Sep 13, 2019
Aug 30, 2019
Aug 30, 2019
Aug 30, 2019
Aug 30, 2019
Aug 30, 2019
Aug 30, 2019
Aug 30, 2019
Aug 30, 2019
Aug 30, 2019
Means of redress
OPPO
Aug 30, 2019
Aug 30, 2019
Aug 30, 2019
Aug 30, 2019
Aug 30, 2019
Jul 2, 2019
Jul 1, 2019
Jun 26, 2019
Jun 26, 2019
Jun 26, 2019
May 7, 2019
May 7, 2019
May 3, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
Claims
OPPO
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
May 2, 2019
Apr 29, 2019
Apr 29, 2019
Dec 17, 2018
Dec 7, 2018
Dec 6, 2018
Nov 29, 2018
Nov 29, 2018
Nov 29, 2018
Nov 29, 2018
Nov 29, 2018
Nov 29, 2018
Nov 22, 2018
Nov 16, 2018
Aug 16, 2018
Aug 7, 2018
Aug 7, 2018
Aug 7, 2018
Aug 7, 2018
Aug 7, 2018
Aug 7, 2018
Aug 7, 2018
Aug 7, 2018
Aug 7, 2018
Aug 7, 2018
Aug 7, 2018
Aug 1, 2018
Aug 1, 2018
Jul 26, 2018
Jul 25, 2018
Jun 27, 2018
Jun 22, 2018
May 18, 2018
May 18, 2018
May 18, 2018
May 9, 2018
May 9, 2018
May 9, 2018
Mar 28, 2018
Mar 28, 2018
Mar 22, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Mar 12, 2018
Oct 5, 2017
Sep 22, 2017
(Electronic) Receipt
Search/Exam
Sep 22, 2017
Annexes in respect of a client data request
Search/Exam
Sep 22, 2017
Letter accompanying subsequently filed items
Search/Exam
Sep 22, 2017
Jun 14, 2017
May 18, 2017
Decision to grant a European patent
Search/Exam
Apr 24, 2017
(Electronic) Receipt
Search/Exam
Apr 24, 2017
Filing of the translations of the claims
Search/Exam
Apr 24, 2017
French translation of claims
Search/Exam
Apr 24, 2017
German translation of the claims
Search/Exam
Apr 24, 2017
Letter accompanying subsequently filed items
Search/Exam
Dec 13, 2016
Dec 13, 2016
Dec 13, 2016
Intention to grant (signatures)
Search/Exam
Dec 13, 2016
Text intended for grant
Search/Exam
Nov 28, 2016
Annex to a communication
Search/Exam
Nov 28, 2016
Annex to the communication
Search/Exam
Nov 28, 2016
Nov 28, 2016
Nov 28, 2016
Nov 28, 2016
Nov 23, 2016
Sep 12, 2016
(Electronic) Receipt
Search/Exam
Sep 12, 2016
Amended claims with annotations
Search/Exam
Sep 12, 2016
Claims
Search/Exam
Sep 12, 2016
Letter accompanying subsequently filed items
Search/Exam
Sep 12, 2016
Jun 6, 2016
Advice of delivery
Search/Exam
May 31, 2016
Acknowledgement of a document
Search/Exam
May 31, 2016
Annex to the communication
Search/Exam
May 31, 2016
Preparation for oral proceedings
Search/Exam
May 31, 2016
Summons to attend oral proceedings
Search/Exam
Jan 25, 2016
(Electronic) Receipt
Search/Exam
Jan 25, 2016
Amended claims with annotations
Search/Exam
Jan 25, 2016
Claims
Search/Exam
Jan 25, 2016
Letter accompanying subsequently filed items
Search/Exam
Jan 25, 2016
Dec 1, 2015
Nov 24, 2015
(Electronic) Receipt
Search/Exam
Nov 24, 2015
Letter accompanying subsequently filed items
Search/Exam
Nov 24, 2015
Oct 1, 2015
Sep 25, 2015
(Electronic) Receipt
Search/Exam
Sep 25, 2015
Letter accompanying subsequently filed items
Search/Exam
Sep 25, 2015
Jul 15, 2015
Annex to the communication
Search/Exam
Jul 15, 2015
Communication from the Examining Division
Search/Exam
Jul 9, 2015
Examination started
Search/Exam
Mar 17, 2015
Mar 5, 2015
(Electronic) Receipt
Search/Exam
Mar 5, 2015
Mar 5, 2015
Letter accompanying subsequently filed items
Search/Exam
Jul 2, 2014
CDS Clean up - amended applicant details
Search/Exam
Sep 10, 2013
(Electronic) Receipt
Search/Exam
Sep 10, 2013
Sep 10, 2013
Amendments received before examination
Search/Exam
Sep 10, 2013
Letter accompanying subsequently filed items
Search/Exam
Jul 19, 2013
Jul 3, 2013
Jul 3, 2013
European search opinion
Search/Exam
Jul 3, 2013
Supplementary European search report
Search/Exam
Jul 31, 2012
(Electronic) Receipt
Search/Exam
Jul 31, 2012
Jul 31, 2012
Amended claims with annotations
Search/Exam
Jul 31, 2012
Amendments received before examination
Search/Exam
Jul 31, 2012
Letter accompanying subsequently filed items
Search/Exam
Mar 28, 2012
Jan 31, 2012
Jan 12, 2012
Dec 20, 2011
(Electronic) Receipt
Search/Exam
Dec 20, 2011
Dec 20, 2011
Amendments received before examination
Search/Exam
Dec 20, 2011
Matter concerning the application
Search/Exam
Dec 20, 2011
Request for entry into the European phase
Search/Exam
Dec 20, 2011
Submission concerning representation
Search/Exam
Oct 28, 2011
Information on entry into European phase
Search/Exam
Jan 18, 2011
Dec 23, 2010
Copy of the international search report
Search/Exam
Dec 23, 2010
Published international application - A1
Search/Exam