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Patent Assignment Assignor Details
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Assignor Name : KOVTUN, YELENA
Total Assignments: 17
Assignment: 1
Reel/Frame:015911/0936   Pages: 2
Recorded: 10/08/2004
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
STEEVES, RITA
Exec Dt:
10/07/2004
2
LUTZ, ROBERT
Exec Dt:
10/07/2004
3
CHARI, RAVI
Exec Dt:
10/07/2004
4
XIE, HONGSHENG
Exec Dt:
10/08/2004
5
KOVTUN, YELENA
Exec Dt:
10/07/2004
Assignee
1
IMMUNOGEN, INC.
128 SIDNEY STREET
CAMBRIDGE, MASSACHUSETTS 02139-4239
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8088387
US20050169933
10960602
Correspondence name and address
SUGHRUE MION, PLLC
2100 PENNSYLVANIA AVENUE, N.W.
SUITE 800
WASHINGTON, DC 20037
Assignment: 2
Reel/Frame:022635/0807   Pages: 3
Recorded: 05/04/2009
Attorney Dkt #:A10145
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CHARI, RAVI V. J.
Exec Dt:
04/29/2009
2
ZHAO, ROBERT YONGXIN
Exec Dt:
04/29/2009
3
KOVTUN, YELENA
Exec Dt:
04/27/2009
4
SINGH, RAJEEVA
Exec Dt:
04/27/2009
5
WIDDISON, WAYNE CHARLES
Exec Dt:
04/30/2009
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8236319
US20090274713
12433604
Correspondence name and address
SUGHRUE MION, PLLC
2100 PENNSYLVANIA AVE., NW
WASHINGTON, DC 20037
Assignment: 3
Reel/Frame:034553/0821   Pages: 2
Recorded: 12/19/2014
Attorney Dkt #:121162-01404
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CHARI, RAVI V.J.
Exec Dt:
04/29/2009
2
ZHAO, ROBERT YONGXIN
Exec Dt:
04/29/2009
3
KOVTUN, YELENA
Exec Dt:
04/27/2009
4
SINGH, RAJEEVA
Exec Dt:
04/27/2009
5
WIDDISON, WAYNE CHARLES
Exec Dt:
04/30/2009
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8613930
US20130011419
13542126
Correspondence name and address
CHRISTIANA X. ZHANG, PH.D., J.D.
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 4
Reel/Frame:034559/0325   Pages: 2
Recorded: 12/19/2014
Attorney Dkt #:121162-01405
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CHARI, RAVI V.J.
Exec Dt:
04/29/2009
2
ZHAO, ROBERT YONGXIN
Exec Dt:
04/29/2009
3
KOVTUN, YELENA
Exec Dt:
04/27/2009
4
SINGH, RAJEEVA
Exec Dt:
04/27/2009
5
WIDDISON, WAYNE CHARLES
Exec Dt:
04/30/2009
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9061995
US20140178416
14080377
Correspondence name and address
CHRISTIANA X. ZHANG, PH.D., J.D.
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 5
Reel/Frame:035697/0155   Pages: 3
Recorded: 05/22/2015
Attorney Dkt #:121162-01406
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CHARI, RAVI V.J.
Exec Dt:
04/29/2009
2
ZHAO, ROBERT YONGXIN
Exec Dt:
04/29/2009
3
KOVTUN, YELENA
Exec Dt:
04/27/2009
4
SINGH, RAJEEVA
Exec Dt:
04/27/2009
5
WIDDISON, WAYNE CHARLES
Exec Dt:
04/30/2009
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9498541
US20150352223
14713419
Correspondence name and address
CHRISTIANA X. ZHANG, PH.D., J.D.
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 6
Reel/Frame:040019/0860   Pages: 2
Recorded: 10/14/2016
Attorney Dkt #:121162-01407
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CHARI, RAVI V.J.
Exec Dt:
04/29/2009
2
ZHAO, ROBERT YONGXIN
Exec Dt:
04/29/2009
3
KOVTUN, YELENA
Exec Dt:
04/27/2009
4
SINGH, RAJEEVA
Exec Dt:
04/27/2009
5
WIDDISON, WAYNE C.
Exec Dt:
04/30/2009
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20170157264
15293579
Correspondence name and address
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 7
Reel/Frame:045665/0222   Pages: 3
Recorded: 04/30/2018
Attorney Dkt #:121162-01408
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CHARI, RAVI V.J.
Exec Dt:
04/29/2009
2
ZHAO, ROBERT YONGXIN
Exec Dt:
04/29/2009
3
KOVTUN, YELENA
Exec Dt:
04/27/2009
4
SINGH, RAJEEVA
Exec Dt:
04/27/2009
5
WIDDISON, WAYNE CHARLES
Exec Dt:
04/30/2009
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10494431
US20180291100
15911571
Correspondence name and address
SYLVIA HSU CHEN YIP
MCCARTER & ENGLISH LLP
265 FRANKLIN STREET
BOSTON, MA 02108
Assignment: 8
Reel/Frame:051809/0459   Pages: 2
Recorded: 02/13/2020
Attorney Dkt #:121162-01409
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
CHARI, RAVI V.J.
Exec Dt:
04/29/2009
2
ZHAO, ROBERT YONGXIN
Exec Dt:
04/29/2009
3
KOVTUN, YELENA
Exec Dt:
04/27/2009
4
SINGH, RAJEEVA
Exec Dt:
04/27/2009
5
WIDDISON, WAYNE CHARLES
Exec Dt:
04/30/2009
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11046762
NONE
16601065
Correspondence name and address
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 9
Reel/Frame:023906/0481   Pages: 3
Recorded: 02/05/2010
Attorney Dkt #:A10207
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SINGH, RAJEEVA
Exec Dt:
10/12/2009
2
KOVTUN, YELENA
Exec Dt:
10/13/2009
3
WILHELM, SHARON D.
Exec Dt:
10/12/2009
4
CHARI, RAVI V. J.
Exec Dt:
10/13/2009
Assignee
1
IMMUNOGEN INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
9150649
US20100129314
12574466
Correspondence name and address
SUGHRUE MION, PLLC
2100 PENNSYLVANIA AVENUE, N.W.
SUITE 800
WASHINGTON, DC 20037
Assignment: 10
Reel/Frame:036888/0049   Pages: 2
Recorded: 10/27/2015
Attorney Dkt #:121162-01605
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
SINGH, RAJEEVA
Exec Dt:
10/12/2009
2
KOVTUN, YELENA
Exec Dt:
10/13/2009
3
WILHELM, SHARON D.
Exec Dt:
10/12/2009
4
CHARI, RAVI V.J.
Exec Dt:
10/13/2009
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20160114052
14835236
Correspondence name and address
CHRISTIANA X. ZHANG, PH.D., J.D.
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 11
Reel/Frame:040082/0958   Pages: 8
Recorded: 10/21/2016
Attorney Dkt #:121162-02804
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KOVTUN, YELENA
Exec Dt:
08/30/2016
2
TAVARES, DANIEL
Exec Dt:
08/23/2016
3
RUI, LINGYUN
Exec Dt:
08/30/2016
4
CHITTENDEN, THOMAS
Exec Dt:
08/17/2016
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10077313
US20170029514
15195401
Correspondence name and address
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 12
Reel/Frame:043524/0561   Pages: 8
Recorded: 09/07/2017
Attorney Dkt #:121162-02805
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KOVTUN, YELENA
Exec Dt:
08/30/2016
2
TAVARES, DANIEL
Exec Dt:
08/23/2016
3
RUI, LINGYUN
Exec Dt:
08/30/2016
4
CHITTENDEN, THOMAS
Exec Dt:
08/17/2016
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10919969
US20180079819
15667697
Correspondence name and address
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 13
Reel/Frame:045611/0462   Pages: 8
Recorded: 04/23/2018
Attorney Dkt #:121162-02806
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KOVTUN, YELENA
Exec Dt:
08/30/2016
2
TAVARES, DANIEL
Exec Dt:
08/23/2016
3
RUI, LINGYUN
Exec Dt:
08/30/2016
4
CHITTENDEN, THOMAS
Exec Dt:
08/17/2016
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10442865
US20180355047
15957757
Correspondence name and address
SYLVIA HSU CHEN YIP
MCCARTER & ENGLISH LLP
265 FRANKLIN STREET
BOSTON, MA 02108
Assignment: 14
Reel/Frame:051741/0873   Pages: 8
Recorded: 02/06/2020
Attorney Dkt #:121162-02807
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KOVTUN, YELENA
Exec Dt:
08/30/2016
2
TAVARES, DANIEL J.
Exec Dt:
08/23/2016
3
RUI, LINGYUN
Exec Dt:
08/30/2016
4
CHITTENDEN, THOMAS
Exec Dt:
08/17/2016
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
10875925
US20200239580
16778988
Correspondence name and address
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 15
Reel/Frame:054167/0526   Pages: 8
Recorded: 10/26/2020
Attorney Dkt #:121162-02808
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KOVTUN, YELENA
Exec Dt:
08/30/2016
2
TAVARES, DANIEL
Exec Dt:
08/23/2016
3
RUI, LINGYUN
Exec Dt:
08/30/2016
4
CHITTENDEN, THOMAS
Exec Dt:
08/17/2016
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11332535
US20210147560
17077877
Correspondence name and address
XIN ZHANG
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 16
Reel/Frame:059734/0951   Pages: 8
Recorded: 04/26/2022
Attorney Dkt #:121162-02809
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KOVTUN, YELENA
Exec Dt:
08/30/2016
2
TAVARES, DANIEL
Exec Dt:
08/23/2016
3
RUI, LINGYUN
Exec Dt:
08/30/2016
4
CHITTENDEN, THOMAS
Exec Dt:
08/17/2016
Assignee
1
IMMUNOGEN, INC.
830 WINTER ST
WALTHAM, MASSACHUSETTS 02451-1477
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11897961
US20220372152
17711518
Correspondence name and address
XIN ZHANG
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 17
Reel/Frame:042976/0536   Pages: 10
Recorded: 07/11/2017
Attorney Dkt #:121162-03404
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
WHITEMAN, KATHLEEN R.
Exec Dt:
03/16/2017
2
NOORDHUIS, PAUL
Exec Dt:
03/07/2017
3
KOVTUN, YELENA
Exec Dt:
03/16/2017
4
LUTZ, ROBERT J.
Exec Dt:
03/13/2017
5
SCHUURHUIS, GERRIT JAN
Exec Dt:
03/01/2017
6
WALKER, RUSSELL MARLIN
Exec Dt:
03/17/2017
Assignee
1
IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20170080102
15311632
Correspondence name and address
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110

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