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International application No. Applicant's or agent's file reference
PCT/EP2019/069488 COV181046-WO01
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
19 July 2019 26 July 2018
FOR FURTHER ACTION: See Form PCT/ISA/220 as well as, where applicable, item 5 below.
This international search report has been prepared by this International Searching Authority and is transmitted to the applicant according to Article 18. A copy is being transmitted to the International Bureau.
It is also accompanied by a copy of each prior art document cited in this report.
1. Basis of the report
a. With regard to the language, the international search was carried out on the basis of:
the international application in the language in which it was filed.
a translation of the international application into                                          which is the language of a translation furnished for the purposes of international search (Rules 12.3(a) and 23.1(b)).
This international search report has been established taking into account the rectification of an obvious mistake authorized by or notified to this Authority under Rule 91 (Rule 43.6bis(a)).
With regard to any nucleotide and/or amino acid sequence disclosed in the international application, the international search was carried out on the basis of a sequence listing:
2. Certain claims were found unsearchable
3. Unity of invention is lacking
4. Title of the invention
The text is approved as submitted by the applicant.
The text has been established by this Authority to read as follows:
5. Abstract
The text is approved as submitted by the applicant.
The text has been established, according to Rule 38.2, by this Authority as it appears in Box No. IV. The applicant may, within one month from the date of mailing of this international search report, submit comments to this Authority.
6. Drawings
The figure of the drawings to be published with the abstract is Figure No. ____________
as suggested by the applicant.
as selected by this Authority, because the applicant failed to suggest a figure.
as selected by this Authority, because this figure better characterizes the invention.
none of the figures is to be published with the abstract.


     C08G 18/76 (2006.01)i; C08G 18/10 (2006.01)i; C08G 18/12 (2006.01)i; C08G 18/32 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
EPO-Internal, WPI Data


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US 2005020706 A1 (KOLLBACH GUIDO [DE] ET AL) 27 January 2005 (2005-01-27)
claims 1,3,4; example 3
US 2006020101 A1 (WINTERMANTEL MATTHIAS [DE] ET AL) 26 January 2006 (2006-01-26)
paragraph [0042]; claims 1,3; examples 1-6; table 1
US 2006128927 A1 (GURTLER CHRISTOPH [DE] ET AL) 15 June 2006 (2006-06-15)
paragraph [0044]; examples 1,2
Special categories of cited documents:
document defining the general state of the art which is not considered to be of particular relevance
document cited by the applicant in the international application
earlier application or patent but published on or after the international filing date
document which may throw doubts on priority claim(s) or which is cited to establish the publication date of another citation or other special reason (as specified)
document referring to an oral disclosure, use, exhibition or other means
document published prior to the international filing date but later than the priority date claimed
later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention
document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone
document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents, such combination being obvious to a person skilled in the art
document member of the same patent family


Patent document cited in search report Publication date
Patent family member(s) Publication date
US 2005020706 A1
27 January 2005
AU 2002358740 A1
BR 0215060 A
CA 2471252 A1
CN 1604926 A
DE 10259248 A1
EP 1456265 A1
HU 0402474 A2
JP 2005511873 A
KR 20040068953 A
MX PA04005750 A
US 2005020706 A1
WO 03051951 A1
30 June 2003
23 November 2004
26 June 2003
06 April 2005
10 July 2003
15 September 2004
29 March 2005
28 April 2005
02 August 2004
10 September 2004
27 January 2005
26 June 2003
US 2006020101 A1
26 January 2006
AT 399184 T
CA 2512555 A1
CN 1724576 A
DE 102004035764 A1
DK 1619215 T3
EP 1619215 A1
ES 2308344 T3
HK 1084961 A1
JP 2006037099 A
KR 20060053971 A
MX PA05007713 A
SI 1619215 T1
TW 200619251 A
US 2006020101 A1
15 July 2008
23 January 2006
25 January 2006
16 March 2006
06 October 2008
25 January 2006
01 December 2008
28 January 2011
09 February 2006
22 May 2006
26 January 2006
31 December 2008
16 June 2006
26 January 2006
US 2006128927 A1
15 June 2006
AT 519797 T
CA 2529708 A1
CN 1789303 A
DE 102004060284 A1
EP 1671991 A2
HK 1093077 A1
JP 2006169532 A
KR 20060067868 A
US 2006128927 A1
15 August 2011
15 June 2006
21 June 2006
29 June 2006
21 June 2006
08 June 2012
29 June 2006
20 June 2006
15 June 2006
Name and mailing address of the ISA/:
European Patent Office
P.B. 5818, Patentlaan 2, 2280 HV Rijswijk,
Telephone No. (+31-70)340-2040
Facsimile No. (+31-70)340-3016
Date of the actual completion of the international search:
10 October 2019
Date of mailing of the international search report:
18 October 2019
Authorized officer:
Buestrich, Ralf
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