EP1569408A3

Communication-processing apparatus and its method

Abstract

A transmitter and a receiver each have an apparatus for carrying out retransmission processing at a TCP layer and an apparatus for carrying out encrypted-data communication at an IPSec layer. The apparatus operating at the IPSec layer has a buffer for storing encrypted data transmitted by the transmitter. When a request for retransmission of data is received from the receiver, in spite of an operation carried out at an IP layer, information available at the TCP layer is obtained and data corresponding to the encrypted data stored in the buffer is returned to the receiver in response to the request.

EP1569408A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 22 September 2024, 2 years ago.

1 sheet

Sheet 1

Every citation, both waysCites: the store holds 1 of 2

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
CN106576085A	Cited by	China	–	Search report	–
EP0616455A2	Cites	European Patent Office (EPO)	Y	Search report	1-24
J.F.KUROSE ET AL: "Computer Networking, A Top-Down Approach Featuring the Internet", 2003, PEARSON EDUCATION, US, XP002357124	Non-patent	–	–	Search report	–
W.STALLINGS: "Cryptography and Network Security, Principles and Practice.", 1999, PRENTICE HALL, US, XP002357178	Non-patent	–	–	Search report	–

7 members in 3 offices

This recordMember, by publication datePriority claim

Priority claims5

Priority claims
Document	Office	Kind	Date
2004055368	Japan	A	2004-02-27
2004055368	Japan	A	2004-02-27
2004055368	Japan	–	2004-02-27
2004055368	–	–	–
JP20040055368	–	–	–

Members7

Family members, oldest first
Document	Office	Kind
EP1569408A2	European Patent Office (EPO)	A2	2005-08-31
US2005190693A1	United States of America	A1	2005-09-01
JP2005244895A	Japan	A	2005-09-08
EP1569408A3This record	European Patent Office (EPO)	A3	2006-02-01
JP4610910B2	Japan	B2	2011-01-12
EP1569408B1	European Patent Office (EPO)	B1	2011-11-09
US8170057B2	United States of America	B2	2012-05-01

34 legal events, as 4 offices reported them to INPADOC

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Events

Legal events, newest first
	Event	Code	Office
2021-08-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-07-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-07-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2021-05-26	Gb: european patent ceased through non-payment of renewal feeCeasedGBPC	GBPC	EP
2021-04-01	Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal feeWithdrawnR119	R119	DE
2019-12-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2019-10-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2019-10-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2018-08-13	Fee paymentPLFP	PLFP	FR
2017-08-10	Fee paymentPLFP	PLFP	FR
2016-08-16	Fee paymentPLFP	PLFP	FR
2012-12-06	No opposition filed against granted patent, or epo opposition proceedings concluded without decisionGrantedR097	R097	DE
2012-10-17	No opposition filedOpposition26N	26N	EP
2012-09-14	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
2012-09-14	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
2012-01-19	Dpma publication of mentioned ep patent grantGrantedR096	R096	DE
2011-11-09	Designated contracting statesAK	AK	EP
2011-11-09	European patent grantedGrantedFG4D	FG4D	GB
2011-10-26	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2011-10-26	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2011-10-26	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2011-10-26	Information on inventor provided before grant (corrected)RIN1	RIN1	EP
2011-10-07	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
2011-07-25	Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS	GRAS	EP
2011-03-02	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP	GRAP	EP
2007-02-21	First examination report despatched17Q	17Q	EP
2006-10-04	Designation fees paidAKX	AKX	EP
2006-05-31	Request for examination filed17P	17P	EP
2006-02-01	Designated contracting statesAK	AK	EP
2006-02-01	Request for extension of the european patentAX	AX	EP
2005-12-16	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
2005-08-31	Designated contracting statesAK	AK	EP
2005-08-31	Request for extension of the european patentAX	AX	EP
2005-07-15	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

Communication-processing apparatus and its method

Abstract

Term

Priority claims5

Members7

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Events

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Titles3

Classification

Designated states2