EP0349520A3

Fluorescence immunoassay based on fluorescent quenching

Abstract

The fluorescence immunoassay is based on the finding that the fluorescence of an antibody or antigen is more strongly quenched by a fluorescence quencher added to the analysis solution, as long as the immune complex has not yet formed. By determining the quenching efficiency before and after complex formation, one can infer the concentration of the corresponding antigen or antibody.

EP0349520A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 25 April 2009, 17.4 years ago.

1 sheet

Sheet 1

Every citation, both ways

Citations
Document	Relation	Office	Category	Cited during
EP0103426A2	Cites	European Patent Office (EPO)	AD	Search report
CA1084838A	Cites	Canada	A	Search report
FR2617974A1	Cites	France	XP	Search report
US4451149A	Cites	United States of America	AD	Search report
WO8908258A1	Cites	World Intellectual Property Organization (WIPO)	E	Search report

4 members in 3 offices

This recordMember, by publication datePriority claim

Priority claims3

Priority claims
Document	Office	Kind	Date
167188	Austria	–	1988-06-28
167188	Austria	A	1988-06-28
AT19880001671	–	–	–

Members4

Family members, oldest first
Document	Office	Kind
EP0349520A2	European Patent Office (EPO)	A2	1990-01-03
AT389769B	Austria	B	1990-01-25
JPH0245761A	Japan	A	1990-02-15
EP0349520A3This record	European Patent Office (EPO)	A3	1990-12-19

6 legal events, as the office reported them to INPADOC

Over the term

Point at a mark for the event

Events

Legal events, newest first
	Event	Code
1992-02-19	Application deemed to be withdrawnWithdrawn18D	18D
1991-12-30	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA	STAA
1990-12-19	Designated contracting statesAK	AK
1990-10-29	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL
1990-01-03	Designated contracting statesAK	AK
1989-11-18	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI