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Extract from the Register of European Patents

EP About this file: EP0550532

EP0550532 - DEXTRIN SULFATES AS ANTI HIV-1 AGENTS AND COMPOSITION THEREOF [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  19.02.1999
Database last updated on 06.07.2024
Most recent event   Tooltip09.05.2008Lapse of the patent in a contracting state
New state(s): GR
published on 11.06.2008  [2008/24]
Applicant(s)For all designated states
M L LABORATORIES PLC
Rutherford Close, Wavertree Technology Park
Liverpool L13 1EJ / GB
[1993/28]
Inventor(s)01 / DAVIES, Donald Selwyn
7 Mynden Close
Beaconsfield, Buckinghamshire HP9 2AU / GB
[1993/28]
Representative(s)HGF
1 City Walk
Leeds LS11 9DX / GB
[N/P]
Former [1998/41]Harrison Goddard Foote
Belmont House, 20 Wood Lane
Leeds LS6 2AE / GB
Former [1993/28]Harrison, Michael Robert
Dibb Lupton Broomhead 117 The Headrow
Leeds LS1 5JX West Yorkshire / GB
Application number, filing date91916848.423.09.1991
[1993/28]
WO1991GB01628
Priority number, dateGB1990002086125.09.1990         Original published format: GB 9020861
[1993/28]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO9204904
Date:02.04.1992
Language:EN
[1992/08]
Type: A1 Application with search report 
No.:EP0550532
Date:14.07.1993
Language:EN
The application published by WIPO in one of the EPO official languages on 02.04.1992 takes the place of the publication of the European patent application.
[1993/28]
Type: B1 Patent specification 
No.:EP0550532
Date:15.04.1998
Language:EN
[1998/16]
Search report(s)International search report - published on:EP02.04.1992
ClassificationIPC:A61K31/725, C08B31/06
[1993/28]
CPC:
A61K31/715 (EP,US); A61P31/12 (EP); A61P31/18 (EP);
C08B31/063 (EP,US)
Designated contracting statesAT,   BE,   CH,   DE,   DK,   ES,   FR,   GB,   GR,   IT,   LI,   LU,   NL [1993/28]
TitleGerman:DEXTRINSULFATE ALS ANTI HIV-1 WIRKSTOFFE UND DIESE ENTHALTENDE ZUBEREITUNGEN[1993/28]
English:DEXTRIN SULFATES AS ANTI HIV-1 AGENTS AND COMPOSITION THEREOF[1993/28]
French:SULFATES DE DEXTRINE UTILISES EN TANT QU'AGENTS ANTI-VIH-1 ET LEURS COMPOSITIONS[1993/28]
Entry into regional phase30.03.1993National basic fee paid 
30.03.1993Designation fee(s) paid 
30.03.1993Examination fee paid 
Examination procedure31.03.1992Request for preliminary examination filed
International Preliminary Examining Authority: GB
30.03.1993Examination requested  [1993/28]
12.06.1995Despatch of a communication from the examining division (Time limit: M06)
19.01.1996Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time
26.03.1996Reply to a communication from the examining division
07.08.1997Despatch of communication of intention to grant (Approval: Yes)
20.10.1997Communication of intention to grant the patent
31.12.1997Fee for grant paid
31.12.1997Fee for publishing/printing paid
Opposition(s)16.01.1999No opposition filed within time limit [1999/14]
Request for further processing for:26.03.1996Request for further processing filed
28.03.1996Full payment received (date of receipt of payment)
Request granted
15.04.1996Decision despatched
Fees paidRenewal fee
07.08.1993Renewal fee patent year 03
10.09.1994Renewal fee patent year 04
07.08.1995Renewal fee patent year 05
13.08.1996Renewal fee patent year 06
18.09.1997Renewal fee patent year 07
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See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Lapses during opposition  TooltipGR15.04.1998
LU23.09.1998
[2008/24]
Former [2004/38]LU23.09.1998
Former [2000/06]LU30.09.1998
Cited inInternational search[X]US2967178  (KERR RALPH W, et al);
 [A]US3017407  (PETRACEK FRANCIS J, et al);
 [A]US3070595  (PETRACEK FRANCIS J, et al);
 [A]EP0240098  (UENO SEIYAKU OYO KENKYUJO KK [JP]);
 [A]EP0338092  (CHUGAI PHARMACEUTICAL CO LTD [JP])
 [A]  - AIDS, volume 2, no. 6, 1988, Gower Academic Journals Ltd., L. Biesert et al.: "Inhibition of HIV and virus replication by polysulphated polyxylan: HOE/BAY 946, a new antiviral compound", pages 449-457, see the whole article
 [AP]  - Antiviral Chemistry & Chemotherapy, volume 2, no. 1, 1991, M. Ito et al.: "Potent and selective activity of dextrin sulphate against human immunodeficiency virus type 1 in vitro", pages 41-44, see the whole article
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.