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The patent EP1464676 was granted to Daikin Industries on May 13, 2020. The application was filed on Dec 13, 2002 under application number EP02790751A. 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.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| SPECHT | Mar 7, 2018 | MULLER BORE & PARTNER PATENTANWALTE PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | EP0996040 |
| EXAMINATION | JPS63312336 |
| EXAMINATION | US4028324 |
| EXAMINATION | US6218014 |
| INTERNATIONAL-SEARCH-REPORT | JP2000309704 |
| INTERNATIONAL-SEARCH-REPORT | JP2001011272 |
| INTERNATIONAL-SEARCH-REPORT | JP2002012705 |
| INTERNATIONAL-SEARCH-REPORT | WO0120618 |
| OPPOSITION | EP1243617 |
| OPPOSITION | EP1275683 |
| OPPOSITION | EP1288263 |
| OPPOSITION | WO0123470 |
| OPPOSITION | WO0179337 |
| OPPOSITION | WO0185848 |
| SEARCH | FR2715407 |
| SEARCH | US4584336 |
| SEARCH | US4585822 |
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
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Apr 17, 2020
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Means of redress
OPPO
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Claims
OPPO
Aug 6, 2018
Claims
OPPO
Aug 6, 2018
Claims
OPPO
Aug 6, 2018
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Jun 21, 2017
May 26, 2017
Decision to grant a European patent
Search/Exam
May 17, 2017
May 17, 2017
May 17, 2017
Intention to grant (signatures)
Search/Exam
May 17, 2017
Text intended for grant (clean copy)
Search/Exam
May 17, 2017
May 12, 2017
May 3, 2017
Claims
Search/Exam
May 3, 2017
Description
Search/Exam
May 3, 2017
French translation of claims
Search/Exam
May 3, 2017
German translation of the claims
Search/Exam
May 3, 2017
Payment of fees and costs
Search/Exam
May 3, 2017
Jan 24, 2017
Jan 24, 2017
Jan 24, 2017
Intention to grant (signatures)
Search/Exam
Jan 24, 2017
Text intended for grant (clean copy)
Search/Exam
Jan 24, 2017
Nov 28, 2016
Amended description with annotations
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Nov 28, 2016
Description
Search/Exam
Nov 28, 2016
Jul 28, 2016
Annex to the communication
Search/Exam
Jul 28, 2016
Communication from the Examining Division
Search/Exam
Sep 26, 2014
Submission concerning representation
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Jan 8, 2014
Claims
Search/Exam
Jan 8, 2014
Sep 11, 2013
Annex to the communication
Search/Exam
Sep 11, 2013
Communication from the Examining Division
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Jul 19, 2012
Claims
Search/Exam
Jul 19, 2012
Jun 4, 2012
May 25, 2012
Jan 25, 2012
Annex to the communication
Search/Exam
Jan 25, 2012
Communication from the Examining Division
Search/Exam
Jul 6, 2009
Claims
Search/Exam
Jul 6, 2009
May 6, 2009
Letter concerning fees and payments
Search/Exam
Apr 22, 2009
Refund of fees
Search/Exam
Mar 4, 2009
Annex to the communication
Search/Exam
Mar 4, 2009
Communication from the Examining Division
Search/Exam
Mar 17, 2005
Maintenance of the application
Search/Exam
Jan 27, 2005
Jan 24, 2005
Jan 24, 2005
Supplementary European search report
Search/Exam
Sep 17, 2004
Annex
Search/Exam
Sep 17, 2004
Matter concerning the application
Search/Exam
Aug 27, 2004
Aug 25, 2004
Notification of forthcoming publication
Search/Exam
Aug 24, 2004
Enquiry with the International Bureau
Search/Exam
Jul 27, 2004
Jul 21, 2004
Communication to designated inventor
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Jul 21, 2004
Communication to designated inventor
Search/Exam
Jul 21, 2004
Communication to designated inventor
Search/Exam
Jul 21, 2004
Communication to designated inventor
Search/Exam
Jul 21, 2004
Communication to designated inventor
Search/Exam
Jun 29, 2004
Abstract
Search/Exam
Jun 29, 2004
Annex
Search/Exam
Jun 29, 2004
Annex
Search/Exam
Jun 29, 2004
Claims
Search/Exam
Jun 29, 2004
Description
Search/Exam
Jun 29, 2004
Drawings
Search/Exam
Jun 29, 2004
Request for entry into the European phase
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May 18, 2004
May 18, 2004
May 3, 2004
May 3, 2004
Information on entry into European phase
Search/Exam
Jun 26, 2003
Copy of the international search report
Search/Exam
Jun 26, 2003
Jun 26, 2003
Published international application - A1
Search/Exam