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Patent Assignment Assignor Details
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Assignor Name : WITOWSKI, STEVEN
Total Assignments: 20
Assignment: 1
Reel/Frame:023457/0180   Pages: 8
Recorded: 11/02/2009
Attorney Dkt #:223355-057PCT1US1-127747
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
10/26/2009
2
WITOWSKI, STEVEN
Exec Dt:
10/05/2009
3
GROSSI, ALFREDO
Exec Dt:
10/05/2009
4
ZHAO, HONG
Exec Dt:
10/29/2009
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
320 BENT STREET
CAMBRIDGE, MASSACHUSETTS 02141
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8802628
US20100048489
12541410
Correspondence name and address
KELLY T. MURPHY
444 WEST MICHIGAN AVENUE
HONIGMAN MILLER SCHWARTZ & COHN
KALAMAZOO, MI 49007
Assignment: 2
Reel/Frame:024399/0959   Pages: 8
Recorded: 05/18/2010
Attorney Dkt #:223355/057P2/127446
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
10/26/2009
2
WITOWSKI, STEVEN
Exec Dt:
10/05/2009
3
GROSSI, ALFREDO
Exec Dt:
10/05/2009
4
ZHAO, HONG
Exec Dt:
10/29/2009
Assignee
1
IRONWOOD PHARMACEUTICALS INC.
320 BENT STREET
CAMBRIDGE, MASSACHUSETTS 02141
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20120213846
13059154
Correspondence name and address
JONATHAN P. O'BRIEN
350 EAST MICHIGAN AVE., SUITE 300
KALAMAZOO, MI 49007
Assignment: 3
Reel/Frame:030335/0276   Pages: 8
Recorded: 05/02/2013
Attorney Dkt #:223355/057US1CON1/338401
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
10/26/2009
2
WITOWSKI, STEVEN
Exec Dt:
10/05/2009
3
GROSSI, ALFREDO
Exec Dt:
10/05/2009
4
ZHAO, HONG
Exec Dt:
10/29/2009
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130273169
13837631
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVENUE
SUITE 300
KALAMAZOO, MI 49007
Assignment: 4
Reel/Frame:036184/0035   Pages: 8
Recorded: 07/27/2015
Attorney Dkt #:223355/057US1CON3/367920
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
10/26/2009
2
WITOWSKI, STEVEN
Exec Dt:
10/05/2009
3
GROSSI, ALFREDO
Exec Dt:
10/05/2009
4
ZHAO, HONG
Exec Dt:
10/29/2009
Assignee
1
IRONWOOD PHARMACEUTICALS, INC
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20150132375
14597599
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVENUE
SUITE 300
KALAMAZOO, MI 49024
Assignment: 5
Reel/Frame:036592/0256   Pages: 8
Recorded: 09/17/2015
Attorney Dkt #:IW057US1CON2 AND CON4
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
10/26/2009
2
WITOWSKI, STEVEN
Exec Dt:
10/05/2009
3
GROSSI, ALFREDO
Exec Dt:
10/05/2009
4
ZHAO, HONG
Exec Dt:
10/29/2009
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20140287034
14286062
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVENUE
SUITE 300
KALAMAZOO, MI 49007
Assignment: 6
Reel/Frame:023972/0241   Pages: 12
Recorded: 02/22/2010
Attorney Dkt #:223355-127368
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
11/06/2009
2
WITOWSKI, STEVEN
Exec Dt:
11/30/2009
3
GROSSI, ALFREDO
Exec Dt:
10/29/2009
4
ZHAO, HONG
Exec Dt:
10/29/2009
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
320 BENT STREET
CAMBRIDGE, MASSACHUSETTS 02141
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20120039949
13062324
Correspondence name and address
JONATHAN P. O'BRIEN
350 EAST MICHIGAN AVENUE
HONIGMAN MILLER SCHWARTZ & COHN
KALAMAZOO, MI 49007
Assignment: 7
Reel/Frame:025194/0206   Pages: 12
Recorded: 10/26/2010
Attorney Dkt #:225533/079PCT1/302159
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
08/12/2010
2
WITOWSKI, STEVEN
Exec Dt:
10/19/2010
3
GROSSI, ALFREDO
Exec Dt:
08/31/2010
4
ZHOU, HONG
Exec Dt:
08/11/2010
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130012454
13389919
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVE., SUITE 300
KALAMAZOO, MI 49007-3800
Assignment: 8
Reel/Frame:025194/0386   Pages: 12
Recorded: 10/26/2010
Attorney Dkt #:223355/080US1/301886
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
10/20/2010
2
WITOWSKI, STEVEN
Exec Dt:
10/19/2010
3
GROSSI, ALFREDO
Exec Dt:
10/07/2010
4
ZHOU, HONG
Exec Dt:
10/08/2010
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STEET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8748573
US20110059903
12851330
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVE., SUITE 300
KALAMAZOO, MI 49007
Assignment: 9
Reel/Frame:025209/0803   Pages: 12
Recorded: 10/27/2010
Attorney Dkt #:225533/079PCT1/302159
Conveyance: CORRECTIVE ASSIGNMENT TO CORRECT THE LAST NAME OF INVENTOR HONG ZHAO PREVIOUSLY RECORDED ON REEL 025194 FRAME 0206. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT.
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
08/12/2010
2
WITOWSKI, STEVEN
Exec Dt:
10/19/2010
3
GROSSI, ALFREDO
Exec Dt:
08/31/2010
4
ZHAO, HONG
Exec Dt:
08/11/2010
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130012454
13389919
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVE., SUITE 300
KALAMAZOO, MI 49007
Assignment: 10
Reel/Frame:025224/0352   Pages: 14
Recorded: 10/29/2010
Attorney Dkt #:223355/080US1/301886
Conveyance: CORRECTIVE ASSIGNMENT TO CORRECT THE LAST NAME OF THE FOURTH ASSIGNOR, PREVIOUSLY RECORDED ON REEL 025194 FRAME 0386. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT.
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
10/20/2010
2
WITOWSKI, STEVEN
Exec Dt:
10/19/2010
3
GROSSI, ALFREDO
Exec Dt:
10/07/2010
4
ZHAO, HONG
Exec Dt:
10/08/2010
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8748573
US20110059903
12851330
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVENUE, SUITE 300
KALAMAZOO, MICHIGAN 49007
Assignment: 11
Reel/Frame:025241/0251   Pages: 14
Recorded: 10/29/2010
Attorney Dkt #:223355/079PCT1/302159
Conveyance: CORRECTIVE ASSIGNMENT TO CORRECT THE LAST NAME OF INVENTOR HONG ZHAO. PREVIOUSLY RECORDED ON REEL 025194 FRAME 0206. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT.
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
08/12/2010
2
WITOWSKI, STEVEN
Exec Dt:
10/19/2010
3
GROSSI, ALFREDO
Exec Dt:
08/31/2010
4
ZHAO, HONG
Exec Dt:
08/11/2010
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130012454
13389919
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVE., SUITE 300
KALAMAZOO, MICHIGAN 49007
Assignment: 12
Reel/Frame:027929/0745   Pages: 8
Recorded: 03/26/2012
Attorney Dkt #:223355/079PCT1US1/323438
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
08/12/2010
2
WITOWSKI, STEVEN
Exec Dt:
10/19/2010
3
GROSSI, ALFREDO
Exec Dt:
08/31/2010
4
ZHAO, HONG
Exec Dt:
08/11/2010
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130012454
13389919
Correspondence name and address
KELLY T. MURPHY
HONIGMAN MILLER SCHWARTZ AND COHN LLP
350 E. MICHIGAN AVE., SUITE 300
KALAMAZOO, MI 49007
Assignment: 13
Reel/Frame:030337/0324   Pages: 8
Recorded: 05/02/2013
Attorney Dkt #:223355/080US1CON1/338400
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
10/20/2010
2
WITOWSKI, STEVEN
Exec Dt:
10/19/2010
3
GROSSI, ALFREDO
Exec Dt:
10/07/2010
4
ZHAO, HONG
Exec Dt:
10/08/2010
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130190239
13840821
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVENUE
SUITE 300
KALAMAZOO, MI 49007
Assignment: 14
Reel/Frame:026632/0946   Pages: 6
Recorded: 07/22/2011
Attorney Dkt #:223355/070PCT1US1/309709
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
04/22/2011
2
WITOWSKI, STEVEN
Exec Dt:
05/11/2011
3
GROSSI, ALFREDO
Exec Dt:
04/25/2011
4
ZHAO, HONG
Exec Dt:
04/22/2011
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20120039949
13062324
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVE., SUITE 300
KALAMAZOO, MI 49007
Assignment: 15
Reel/Frame:026633/0183   Pages: 6
Recorded: 07/22/2011
Attorney Dkt #:223355/071PCT1US1/309711
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
04/22/2011
2
WITOWSKI, STEVEN
Exec Dt:
05/11/2011
3
GROSSI, ALFREDO
Exec Dt:
04/25/2011
4
ZHAO, HONG
Exec Dt:
04/22/2011
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20120009225
13062332
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVE., SUITE 300
KALAMAZOO, MI 49007
Assignment: 16
Reel/Frame:027209/0499   Pages: 8
Recorded: 11/10/2011
Attorney Dkt #:223355/057PCT1US1/308649
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
10/12/2011
2
WITOWSKI, STEVEN
Exec Dt:
10/25/2011
3
GROSSI, ALFREDO
Exec Dt:
10/05/2011
4
ZHAO, HONG
Exec Dt:
10/26/2011
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20120213846
13059154
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVE., SUITE 300
KALAMAZOO, MI 49007
Assignment: 17
Reel/Frame:031919/0962   Pages: 9
Recorded: 01/08/2014
Attorney Dkt #:223355/081PCT1US1/327261
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
JOHNSTON, JEFFREY
Exec Dt:
09/12/2013
2
FRETZEN, ANGELIKA
Exec Dt:
03/20/2013
3
WITOWSKI, STEVEN
Exec Dt:
11/09/2013
4
GROSSI, ALFREDO
Exec Dt:
08/07/2013
5
ZHAO, HONG
Exec Dt:
03/22/2013
6
LAVINS, BERNARD JOSEPH
Exec Dt:
10/07/2013
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130059797
13505926
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVE.
SUITE 3000
KALAMAZOO, MI 49007-3800
Assignment: 18
Reel/Frame:031973/0375   Pages: 8
Recorded: 01/15/2014
Attorney Dkt #:223355/079PCT1US1/323438
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
03/20/2013
2
WITOWSKI, STEVEN
Exec Dt:
11/09/2013
3
GROSSI, ALFREDO
Exec Dt:
08/07/2013
4
ZHAO, HONG
Exec Dt:
03/22/2013
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20130012454
13389919
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVE
SUITE 3000
KALAMAZOO, MI 49007-3800
Assignment: 19
Reel/Frame:034156/0742   Pages: 8
Recorded: 11/12/2014
Attorney Dkt #:223355/079PCT1US2/361102
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
FRETZEN, ANGELIKA
Exec Dt:
03/20/2013
2
WITOWSKI, STEVEN
Exec Dt:
11/09/2013
3
GROSSI, ALFREDO
Exec Dt:
08/07/2013
4
ZHAO, HONG
Exec Dt:
03/22/2013
Assignee
1
IRONWOOD PHARMACEUTICALS, INC.
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20150031632
14510802
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVE.
SUITE 300
KALAMAZOO, MI 49007-3800
Assignment: 20
Reel/Frame:036421/0951   Pages: 9
Recorded: 08/26/2015
Attorney Dkt #:223355/81PCT1US1C1/349174
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
JOHNSTON, JEFFREY
Exec Dt:
09/12/2013
2
FRETZEN, ANGELIKA
Exec Dt:
03/20/2013
3
WITOWSKI, STEVEN
Exec Dt:
11/09/2013
4
GROSSI, ALFREDO
Exec Dt:
08/07/2013
5
ZHAO, HONG
Exec Dt:
03/22/2013
6
LAVINS, BERNARD JOSEPH
Exec Dt:
10/07/2013
Assignee
1
IRONWOOD PHARMACEUTICALS, INC
301 BINNEY STREET
CAMBRIDGE, MASSACHUSETTS 02142
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
NONE
US20140349948
14138237
Correspondence name and address
KELLY T. MURPHY
350 EAST MICHIGAN AVENUE
SUITE 300
KALAMAZOO, MI 49007

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