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Patent Assignment Assignor Details
NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Assignor Name : MOURACHOV, SERGUEI
Total Assignments: 21
Assignment: 1
Reel/Frame:013659/0601   Pages: 3
Recorded: 01/10/2003
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
MOURACHOV, SERGUEI
Exec Dt:
01/09/2003
Assignee
1
VELARE TECHNOLOGIES INC.
1102 - 1255 BIDWELL STREET
VANCOUVER BC, CANADA V6G 2K8
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20040139424
10340657
Correspondence name and address
BRUCE M. GREEN
OYEN WIGGS GREEN & MUTALA
480 - 601 WEST CORDOVA STREET
VANCOUVER, BC V6B 1G1
Assignment: 2
Reel/Frame:017741/0557   Pages: 8
Recorded: 06/07/2006
Attorney Dkt #:324212000600
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BUTTERFIELD, DANIEL STEWART
Exec Dt:
06/06/2006
2
COSTELLO, ERIC
Exec Dt:
06/05/2006
3
FAKE, CATERINA
Exec Dt:
06/07/2006
4
HENDERSON-BEGG, CALLUM JAMES
Exec Dt:
06/06/2006
5
MOURACHOV, SERGUEI
Exec Dt:
06/06/2006
6
SCHACHTER, JOSHUA ELI
Exec Dt:
06/06/2006
Assignee
1
YAHOO! INC.
701 FIRST AVENUE
SUNNYVALE, CALIFORNIA 94089
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10210159
US20060242178
11350635
Correspondence name and address
ROBERT A. SALTZBERG
MORRISON & FOERSTER LLP
425 MARKET STREET
SAN FRANCISCO, CA 94105
Assignment: 3
Reel/Frame:017798/0261   Pages: 5
Recorded: 06/15/2006
Attorney Dkt #:324212014300
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BUTTERFIELD, DANIEL STEWART
Exec Dt:
06/06/2006
2
FAKE, CATERINA
Exec Dt:
06/07/2006
3
HENDERSON-BEGG, CALLUM JAMES
Exec Dt:
06/06/2006
4
MOURACHOV, SERGUEI
Exec Dt:
06/06/2006
Assignee
1
YAHOO! INC.
701 FIRST AVENUE
SUNNYVALE, CALIFORNIA 94089
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8732175
US20060242139
11350981
Correspondence name and address
ROBERT A. SALTZBERG
MORRISON & FOERSTER LLP
425 MARKET STREET
SAN FRANCISCO, CA 94105
Assignment: 4
Reel/Frame:023210/0244   Pages: 10
Recorded: 09/09/2009
Attorney Dkt #:324212000610
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BUTTERFIELD, DANIEL STEWART
Exec Dt:
06/06/2006
2
FAKE, CATERINA
Exec Dt:
06/07/2006
3
HENDERSON-BEGG, CALLUM JAMES
Exec Dt:
06/06/2006
4
MOURACHOV, SERGUEI
Exec Dt:
06/06/2006
5
SCHACHTER, JOSHUA ELI
Exec Dt:
06/06/2006
6
COSTELLO, ERIC
Exec Dt:
06/05/2006
Assignee
1
YAHOO! INC.
701 FIRST AVENUE
SUNNYVALE, CALIFORNIA 94089
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20100057555
12555706
Correspondence name and address
CHRISTOPHER B. EIDE
MORRISON & FOERSTER LLP
755 PAGE MILL ROAD
PALO ALTO, CA 94304-1018
Assignment: 5
Reel/Frame:043562/0302   Pages: 5
Recorded: 09/12/2017
Attorney Dkt #:085804.718411
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BUTTERFIELD, DANIEL STEWART
Exec Dt:
06/06/2006
2
FAKE, CATERINA
Exec Dt:
06/07/2006
3
HENDERSON-BEGG, CALLUM JAMES
Exec Dt:
06/06/2006
4
MOURACHOV, SERGUEI
Exec Dt:
06/06/2006
Assignee
1
YAHOO! INC.
701 FIRST AVENUE
SUNNYVALE, CALIFORNIA 94089
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10216763
US20120317110
13593112
Correspondence name and address
YAHOO HOLDINGS, INC. C/O GREENBERG TRAUR
MET LIFE BUILDING
200 PARK AVENUE
NEW YORK, NY 10166
Assignment: 6
Reel/Frame:048762/0550   Pages: 5
Recorded: 04/02/2019
Attorney Dkt #:085804.718414
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
BUTTERFIELD, DANIEL STEWART
Exec Dt:
06/06/2006
2
FAKE, CATERINA
Exec Dt:
06/07/2006
3
HENDERSON-BEGG, CALLUM JAMES
Exec Dt:
06/06/2006
4
MOURACHOV, SERGUEI
Exec Dt:
06/06/2006
Assignee
1
YAHOO! INC.
701 FIRST AVENUE
SUNNYVALE, CALIFORNIA 94089
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20190179849
16277306
Correspondence name and address
OATH INC. C/O GREENBERG TRAURIG, LLP
MET LIFE BUILDING
200 PARK AVENUE
NEW YORK, NY 10166
Assignment: 7
Reel/Frame:043299/0419   Pages: 12
Recorded: 08/15/2017
Attorney Dkt #:SLACK0001US2A
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GRANT, MYLES
Exec Dt:
06/19/2017
2
MOURACHOV, SERGUEI
Exec Dt:
06/27/2017
3
BOURASSA-DENIS, RENAUD
Exec Dt:
06/13/2017
4
LISZKA, JASON
Exec Dt:
06/13/2017
5
GALLAGHER, JOHN
Exec Dt:
06/13/2017
6
TROMBA, ISABELLA
Exec Dt:
06/13/2017
7
WEISS, NOAH
Exec Dt:
06/13/2017
Assignee
1
SLACK TECHNOLOGIES, INC.
155 5TH STREET, 6TH FLOOR
SAN FRANCISCO, CALIFORNIA 94103
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9940394
NONE
15651887
Correspondence name and address
HANCHUK KHEIT LLP
258 SAINT NICHOLAS AVENUE, NO. 8A
NEW YORK, NY 10027
Assignment: 8
Reel/Frame:044890/0568   Pages: 14
Recorded: 02/11/2018
Attorney Dkt #:SLACK0001US2A
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MOURACHOV, SERGUEI
Exec Dt:
01/31/2018
2
GRANT, MYLES
Exec Dt:
01/31/2018
3
BOURASSA-DENIS, RENAUD
Exec Dt:
01/30/2018
4
LISZKA, JASON
Exec Dt:
01/30/2018
5
GALLAGHER, JOHN
Exec Dt:
01/31/2018
6
TROMBA, ISABELLA
Exec Dt:
02/09/2018
7
WEISS, NOAH
Exec Dt:
01/31/2018
8
BUTTERFIELD, DANIEL STEWART
Exec Dt:
12/14/2017
9
HENDERSON-BEGG, CALLUM
Exec Dt:
12/14/2017
Assignee
1
SLACK TECHNOLOGIES, INC.
155 5TH STREET, 6TH FLOOR
SAN FRANCISCO, CALIFORNIA 94103
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9940394
NONE
15651887
Correspondence name and address
HANCHUK KHEIT LLP
258 SAINT NICHOLAS AVENUE, NO. 8A
NEW YORK, NY 10027
Assignment: 9
Reel/Frame:047822/0297   Pages: 14
Recorded: 12/19/2018
Attorney Dkt #:SLACK0001US2ACON1A
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MOURACHOV, SERGUEI
Exec Dt:
01/31/2018
2
GRANT, MYLES
Exec Dt:
01/31/2018
3
BOURASSA-DENIS, RENAUD
Exec Dt:
01/30/2018
4
LISZKA, JASON
Exec Dt:
01/31/2018
5
GALLAGHER, JOHN
Exec Dt:
01/31/2018
6
TROMBA, ISABELLA
Exec Dt:
02/09/2018
7
WEISS, NOAH
Exec Dt:
01/31/2018
8
BUTTERFIELD, DANIEL STEWART
Exec Dt:
12/14/2017
9
HENDERSON-BEGG, CALLUM
Exec Dt:
12/14/2017
Assignee
1
SLACK TECHNOLOGIES, INC.
155 5TH STREET, 6TH FLOOR
SAN FRANCISCO, CALIFORNIA 94103
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
10229204
NONE
15949030
 
10229205
NONE
15949034
 
10846349
NONE
15949039
Correspondence name and address
HANCHUK KHEIT LLP
258 SAINT NICHOLAS AVE. SUITE 8A
NEW YORK, NY 10027
Assignment: 10
Reel/Frame:054055/0794   Pages: 14
Recorded: 10/14/2020
Attorney Dkt #:2776-49.08
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
GRANT, MYLES
Exec Dt:
01/31/2018
2
MOURACHOV, SERGUEI
Exec Dt:
01/31/2018
3
BOURASSA-DENIS, RENAUD
Exec Dt:
01/30/2018
4
LISZKA, JASON
Exec Dt:
01/31/2018
5
GALLAGHER, JOHN
Exec Dt:
01/31/2018
6
TROMBA, ISABELLA
Exec Dt:
02/09/2018
7
WEISS, NOAH
Exec Dt:
01/31/2018
8
BUTTERFIELD, DANIEL STEWART
Exec Dt:
12/14/2017
9
HENDERSON-BEGG, CALLUM
Exec Dt:
12/14/2017
Assignee
1
SLACK TECHNOLOGIES, INC.
500 HOWARD STREET
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11586686
US20210026903
17070651
Correspondence name and address
ERISE IP, P.A.
7015 COLLEGE BOULEVARD
SUITE 700
OVERLAND PARK, KS 66211
Assignment: 11
Reel/Frame:048989/0444   Pages: 7
Recorded: 04/25/2019
Attorney Dkt #:065841/512610
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WILLS, JOSHUA
Exec Dt:
04/23/2019
2
LLOYD, PAUL
Exec Dt:
04/23/2019
3
MOURACHOV, SERGUEI
Exec Dt:
04/23/2019
4
WALKER, NEIL
Exec Dt:
04/23/2019
Assignee
1
SLACK TECHNOLOGIES, INC.
500 HOWARD STREET
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10630627
US20190386945
16010891
Correspondence name and address
ALSTON & BIRD LLP/SLACK TECHNOLOGIES, IN
101 SOUTH TRYON STREET, SUITE 4000
CHARLOTTE, NC 28280-4000
Assignment: 12
Reel/Frame:054463/0350   Pages: 7
Recorded: 11/24/2020
Attorney Dkt #:S392-0013USC1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WILLS, JOSHUA
Exec Dt:
04/23/2019
2
LLOYD, PAUL
Exec Dt:
04/23/2019
3
MOURACHOV, SERGUEI
Exec Dt:
04/23/2019
4
WALKER, NEIL
Exec Dt:
04/23/2019
Assignee
1
SLACK TECHNOLOGIES, INC.
500 HOWARD STREET
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11706173
US20200267106
16819403
Correspondence name and address
LEE & HAYES P.C.
601 WEST RIVERSIDE AVENUE
SUITE 1400
SPOKANE, WA 99201
Assignment: 13
Reel/Frame:049237/0080   Pages: 9
Recorded: 05/21/2019
Attorney Dkt #:065841/524436
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LARGMAN, RAISSA
Exec Dt:
05/20/2019
2
KLYM, JASON
Exec Dt:
05/09/2019
3
GLINENKO, DANIL
Exec Dt:
05/10/2019
4
WALKER, NEIL
Exec Dt:
05/19/2019
5
CHRISTIAN, MARK
Exec Dt:
05/09/2019
6
MOURACHOV, SERGUEI
Exec Dt:
05/09/2019
Assignee
1
SLACK TECHNOLOGIES, INC.
500 HOWARD STREET
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10397624
NONE
16206553
Correspondence name and address
ALSTON & BIRD LLP
101 S TRYON ST, SUITE 4000
BANK OF AMERICA PLAZA
CHARLOTTE, NC 28280-4000
Assignment: 14
Reel/Frame:052543/0001   Pages: 9
Recorded: 04/30/2020
Attorney Dkt #:S392-0021US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LARGMAN, RAISSA
Exec Dt:
05/20/2019
2
KLYM, JASON
Exec Dt:
05/09/2019
3
GLINENKO, DANIL
Exec Dt:
05/10/2019
4
WALKER, NEIL
Exec Dt:
05/09/2019
5
CHRISTIAN, MARK
Exec Dt:
05/09/2019
6
MOURACHOV, SERGUEI
Exec Dt:
05/09/2019
Assignee
1
SLACK TECHNOLOGIES, INC.
500 HOWARD STREET
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10972795
US20200084489
16176851
Correspondence name and address
LEE & HAYES, P.C.
601 W. RIVERSIDE AVE
SUITE 1400
SPOKANE, WA 99201
Assignment: 15
Reel/Frame:056789/0117   Pages: 9
Recorded: 07/08/2021
Attorney Dkt #:P10050USC3/S392-0021USC3
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LARGMAN, RAISSA
Exec Dt:
05/20/2019
2
KLYM, JASON
Exec Dt:
05/09/2019
3
GLINENKO, DANIL
Exec Dt:
05/10/2019
4
WALKER, NEIL
Exec Dt:
05/09/2019
5
CHRISTIAN, MARK
Exec Dt:
05/09/2019
6
MOURACHOV, SERGUEI
Exec Dt:
05/09/2019
Assignee
1
SLACK TECHNOLOGIES, INC.
500 HOWARD STREET
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11582500
US20210329339
17210887
Correspondence name and address
LEE & HAYES PC / SLACK
601 W RIVERSIDE AVENUE
SUITE 1400
SPOKANE, WA 99201
Assignment: 16
Reel/Frame:050684/0862   Pages: 5
Recorded: 10/10/2019
Attorney Dkt #:065841/511357
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LARGMAN, RAISSA
Exec Dt:
08/19/2019
2
YADAV, ANANYA
Exec Dt:
08/28/2019
3
MOURACHOV, SERGUEI
Exec Dt:
08/16/2019
4
WALKER, NEIL
Exec Dt:
08/15/2019
5
SODOL, DENIS
Exec Dt:
08/15/2019
6
LLOYD, PAUL
Exec Dt:
08/15/2019
Assignee
1
SLACK TECHNOLOGIES, INC.
500 HOWARD STREET
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10506032
US20190334983
15963636
Correspondence name and address
ALSTON & BIRD LLP
BANK OF AMERICA PLAZA
101 SOUTH TRYON STREET, SUITE 4000
CHARLOTTE, NC 28280-4000
Assignment: 17
Reel/Frame:052301/0239   Pages: 7
Recorded: 04/02/2020
Attorney Dkt #:065841/522298
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
LARGMAN, RAISSA
Exec Dt:
12/06/2018
2
KLYM, JASON
Exec Dt:
03/27/2020
3
GLINENKO, DANIL
Exec Dt:
03/27/2020
4
WALKER, NEIL
Exec Dt:
03/27/2020
5
CHRISTIAN, MARK
Exec Dt:
12/06/2018
6
MOURACHOV, SERGUEI
Exec Dt:
03/27/2020
Assignee
1
SLACK TECHNOLOGIES, INC.
500 HOWARD STREET
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10972795
US20200084489
16176851
Correspondence name and address
ALSTON & BIRD LLP
BANK OF AMERICA PLAZA
101 SOUTH TRYON STREET, SUITE 4000
CHARLOTTE, NC 28280
Assignment: 18
Reel/Frame:052626/0391   Pages: 5
Recorded: 05/11/2020
Attorney Dkt #:S392-0003US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
HAYNES, LYNSEY
Exec Dt:
04/22/2020
2
MONTROIS, CHRISTOPHER DAVID
Exec Dt:
04/23/2020
3
MOURACHOV, SERGUEI
Exec Dt:
04/22/2020
4
PAPAZIAN, VAHAKN
Exec Dt:
05/07/2020
5
SCHEINBLUM, JAMES
Exec Dt:
05/08/2020
Assignee
1
SLACK TECHNOLOGIES, INC.
500 HOWARD STREET
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11190368
US20210351944
16870713
Correspondence name and address
LEE & HAYES PC / SLACK
601 W RIVERSIDE AVENUE
SUITE 1400
SPOKANE, WA 99201
Assignment: 19
Reel/Frame:053498/0663   Pages: 5
Recorded: 08/14/2020
Attorney Dkt #:2776-33.01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
OBEROI, ANKUR
Exec Dt:
08/06/2020
2
MAHANTI, ABHISHEK
Exec Dt:
06/29/2020
3
ZENG, HELEN WEI
Exec Dt:
07/09/2020
4
MOURACHOV, SERGUEI
Exec Dt:
06/29/2020
5
GUPTA, CHIRAG
Exec Dt:
06/29/2020
6
SAHNI, SAURABH
Exec Dt:
07/09/2020
Assignee
1
SLACK TECHNOLOGIES, INC.
500 HOWARD STREET
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11936638
US20200412708
16914435
Correspondence name and address
ERISE IP, P.A.
7015 COLLEGE BOULEVARD
SUITE 700
OVERLAND PARK, KS 66211
Assignment: 20
Reel/Frame:062831/0090   Pages: 12
Recorded: 02/28/2023
Attorney Dkt #:S392-0125US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MOURACHOV, SERGUEI
Exec Dt:
12/15/2022
2
THANGUDU, SAMEERA
Exec Dt:
01/05/2023
3
ATWOOD, GRACE DANIELLE ELLEN
Exec Dt:
02/27/2023
4
SODOL, DENIS
Exec Dt:
12/07/2022
5
MUKHOPADHYAY, ANIRBAN
Exec Dt:
12/15/2022
Assignee
1
SALESFORCE, INC.
415 MISSION STREET
3RD FLOOR
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11784955
NONE
18078702
Correspondence name and address
LEE & HAYES, P.C.
601 W. RIVERSIDE AVE.
STE 1400
SPOKANE, WA 99201
Assignment: 21
Reel/Frame:062847/0930   Pages: 14
Recorded: 03/01/2023
Attorney Dkt #:S392-0126US
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MAURER, AARON
Exec Dt:
01/03/2023
2
MOURACHOV, SERGUEI
Exec Dt:
12/15/2022
3
ATWOOD, GRACE DANIELLE ELLEN
Exec Dt:
02/27/2023
4
THANGUDU, SAMEERA
Exec Dt:
01/05/2023
5
SODOL, DENIS
Exec Dt:
12/07/2022
6
MUKHOPADHYAY, ANIRBAN
Exec Dt:
12/15/2022
Assignee
1
SALESFORCE, INC.
415 MISSION STREET
3RD FLOOR
SAN FRANCISCO, CALIFORNIA 94105
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11968244
NONE
18078730
Correspondence name and address
LEE & HAYES, P.C.
601 W. RIVERSIDE AVE.
STE 1400
SPOKANE, WA 99201

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