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1. WO2020157630 - POLY(ACIDE MÉTHACRYLIQUE) DE POIDS MOLÉCULAIRE ÉLEVÉ


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INTERNATIONAL SEARCH REPORT (ISR)
Part 1:  1  2  3  4  5  6          Part 2:  A  B  C  D  E 
International application No. Applicant's or agent's file reference
PCT/IB2020/050612 PAT058420-WO-PCT
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
27 January 2020 28 January 2019
Applicant
ALCON INC.
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)).
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)).
c.
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
a.
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.
b.
none of the figures is to be published with the abstract.

A. CLASSIFICATION OF SUBJECT MATTER

     C08F 120/06 (2006.01)i; C08F 2/38 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC

B. FIELDS SEARCHED

Minimum documentation searched (classification system followed by classification symbols):
     C08F
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

C. DOCUMENTS CONSIDERED TO BE RELEVANT

Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
(1)
X
NILS F. G. WITTENBERG ET AL, "Kinetics and Modeling of Methacrylic Acid Radical Polymerization in Aqueous Solution", MACROMOLECULAR REACTION ENGINEERING,Vol. 7, No. 6, 10 April 2013 (2013-04-10), page 267-276,
XP055675291
3-5,12,13,17,18
Y
figures 4,6
1,2,6-11,14-16
page 279, column 2, line 1 - line 4
page 267
(2)
X
EP 3291976 A1 (NOVARTIS AG [CH]) 14 March 2018 (2018-03-14)
17
paragraph [0094]
(3)
Y
NILS F. G. WITTENBERG ET AL, "Chain Transfer to 2-Mercaptoethanol in Methacrylic Acid Polymerization in Aqueous Solution", MACROMOLECULAR CHEMISTRY AND PHYSICS.,Vol. 213, No. 24, 21 December 2012 (2012-12-21), page 2653-2658,
XP055675306
1,2
figure 5
(4)
Y
Stanley Sandler Wolf Karo, "Polymer Syntheses," 02 December 2012 (2012-12-02), elsevier,
XP002798254
ISBN: 9780126185126
1,6,7,15,16
page 320 - page 321
(5)
Y
US 4306045 A (YOSHIDA NORIMASA ET AL) 15 December 1981 (1981-12-15)
1,10,11
example 1
(6)
Y
US 5296577 A (TAMURA HITOSHI [JP] ET AL) 22 March 1994 (1994-03-22)
1,8-11
claims 1,3,8
(7)
Y
US 2010144958 A1 (FINDLAY PAUL HUGH [GB] ET AL) 10 June 2010 (2010-06-10)
14
paragraphs [0048] - [0049], [0064], [0066]
*
Special categories of cited documents:
"A"
document defining the general state of the art which is not considered to be of particular relevance
"D"
document cited by the applicant in the international application
"E"
earlier application or patent but published on or after the international filing date
"L"
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)
"O"
document referring to an oral disclosure, use, exhibition or other means
"P"
document published prior to the international filing date but later than the priority date claimed
"T"
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
"X"
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
"Y"
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

D. INFORMATION ON PATENT FAMILY MEMBERS

Patent document cited in search report Publication date
(day/month/year)
Patent family member(s) Publication date
(day/month/year)
EP 3291976 A1
14 March 2018
CN 107532038 A
EP 3291976 A1
SG 11201707269U A
US 2016326046 A1
WO 2016178160 A1
02 January 2018
14 March 2018
29 November 2017
10 November 2016
10 November 2016
US 4306045 A
15 December 1981
DE 3021767 A1
DE 3051131 C2
JP S608688 B2
JP S55165906 A
US 4306045 A
18 December 1980
26 September 1991
05 March 1985
24 December 1980
15 December 1981
US 5296577 A
22 March 1994
JP H032205 A
JP H0830084 B2
US 5296577 A
08 January 1991
27 March 1996
22 March 1994
US 2010144958 A1
10 June 2010
BR PI0720237 A2
CA 2672384 A1
EP 2102259 A1
JP 2010512442 A
KR 20090111816 A
US 2010144958 A1
WO 2008071662 A1
31 December 2013
19 June 2008
23 September 2009
22 April 2010
27 October 2009
10 June 2010
19 June 2008
Name and mailing address of the ISA/:
European Patent Office
P.B. 5818, Patentlaan 2, 2280 HV Rijswijk,
Netherlands
Telephone No. (+31-70)340-2040
Facsimile No. (+31-70)340-3016
Date of the actual completion of the international search:
16 March 2020
Date of mailing of the international search report:
06 April 2020
Authorized officer:
Jegou, Gwénaëlle
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