The patent EP2171021 was granted to Innospec on Sep 4, 2024. The application was originally filed on Jul 21, 2008 under application number EP08788580A. 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.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE10208326 |
| DESCRIPTION | DE20110995U |
| DESCRIPTION | EP0743972 |
| DESCRIPTION | EP0743974 |
| DESCRIPTION | GB2248068 |
| DESCRIPTION | GB2254610 |
| DESCRIPTION | GB733129 |
| DESCRIPTION | GB763550 |
| DESCRIPTION | US2680756 |
| DESCRIPTION | US2804468 |
| DESCRIPTION | US2818417 |
| DESCRIPTION | US3127351 |
| DESCRIPTION | US3578421 |
| DESCRIPTION | US3652238 |
| DESCRIPTION | US3677725 |
| DESCRIPTION | US3758283 |
| DESCRIPTION | US3811848 |
| DESCRIPTION | US3917466 |
| DESCRIPTION | US3961916 |
| DESCRIPTION | US4252542 |
| DESCRIPTION | US4259087 |
| DESCRIPTION | US4333741 |
| DESCRIPTION | US4388452 |
| DESCRIPTION | US4416668 |
| DESCRIPTION | US4491651 |
| DESCRIPTION | US4537601 |
| DESCRIPTION | US5207891 |
| DESCRIPTION | US5672183 |
| DESCRIPTION | US5863466 |
| DESCRIPTION | US6391070 |
| DESCRIPTION | US6793695 |
| INTERNATIONAL-SEARCH-REPORT | US2006020065 |
| INTERNATIONAL-SEARCH-REPORT | US3677725 |
| INTERNATIONAL-SEARCH-REPORT | US3811848 |
| INTERNATIONAL-SEARCH-REPORT | US3917466 |
| INTERNATIONAL-SEARCH-REPORT | US4182810 |
| INTERNATIONAL-SEARCH-REPORT | US4491651 |
| INTERNATIONAL-SEARCH-REPORT | US5071445 |
| INTERNATIONAL-SEARCH-REPORT | US5214224 |
| INTERNATIONAL-SEARCH-REPORT | US5254138 |
| INTERNATIONAL-SEARCH-REPORT | US6180683 |
| INTERNATIONAL-SEARCH-REPORT | US6488724 |
| INTERNATIONAL-SEARCH-REPORT | WO03072259 |
| INTERNATIONAL-SEARCH-REPORT | WO2007007191 |
| INTERNATIONAL-SEARCH-REPORT | WO2007072005 |
| OPPOSITION | EP1767611 |
| OPPOSITION | US2005183325 |
| OPPOSITION | US3677725 |
| OPPOSITION | US3758283 |
| OPPOSITION | US3811848 |
| OPPOSITION | US3917466 |
| OPPOSITION | US4284415 |
| OPPOSITION | US5214224 |
| OPPOSITION | US5611869 |
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 |
|---|---|
| OPPOSITION | - Abstract, Oral Communication, “New ASTM method for heavy fuel oil stability”, H. Buron, The 229th ACS National Meeting in San Diego, CA, March 13-17, 2005 |
| OPPOSITION | - ASTM D7061 - 06, “Standard Test Method for measuring n-heptane induced phase separation of aphaltene-containing heavy fuel oils as separability number by an optical scanning device, 2006 |
| OPPOSITION | - Certified copy of priority document GB 0714175.7, “Improvements in or relating to hydrocarbon compositions”, filed on July 20, 2007 |
| OPPOSITION | - Certified copy of priority document GB 0714724.2, “Improvements in or relating to hydrocarbon compositions”, filed on July 28, 2007 |
| OPPOSITION | - Declaration of Dr. Jim Barker |
| OPPOSITION | - Experimental Report |
| OPPOSITION | - Experimental test |
| OPPOSITION | - H. BURON, "New ASTM method for heavy fuel oil stability", The 229th ACS National Meeting, San Diego , CA, (20050313), XP055780362 |
| OPPOSITION | - Isopar TM Technical data sheets |
| OPPOSITION | - Machine-generated English translation (from Patent Translate, EPO) of EP1767611A2, “Additive for Crude oils”, filed on 06 September 2006 and published on March 28, 2007 and original document. |
| OPPOSITION | - Product safety data sheet for ISOPAR M |
| OPPOSITION | - "Standard Test Method for measuring n-heptane induced phase separation of aphaltene-containing heavy fuel oils as separability number by an optical scanning device", ASTM D7061 - 06, (20060000), XP055780361 |
| OPPOSITION | - Technical evaluation report for ISOPAR M |
| OPPOSITION | - "Technical report", Chimec SfpA - Techno! DMSson, (20201200), XP055780364 |
| OPPOSITION | - Technical Report submitted by the Opponent |
| OPPOSITION | - Textbook “Additives to prevent deleterious effects associated with long-term storage of petroleum products”, prepared by U.S. Army Engineer Waterways Experiment Station, authored by Mr. R.J. Larson and Dr. P.G. Malone,September 1980 |
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Description
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Amended claims with annotations
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Letter accompanying subsequently filed items
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Communication from the Examining Division
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Amended claims with annotations
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Letter accompanying subsequently filed items
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Submission concerning representation
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Annex to the communication
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Communication from the Examining Division
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Examination started
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Amended claims with annotations
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Jan 22, 2010
Request for entry into the European phase
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Copy of the international search report
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Published international application - A2
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Jul 21, 2008
Abstract
PCTISA
Jul 21, 2008
Annex
PCTISA
Jul 21, 2008
Claims
PCTISA
Jul 21, 2008
Description
PCTISA