skip navigationU S P T O SealUnited States Patent and Trademark Office AOTW logo
Home|Site Index|Search|Guides|Contacts|eBusiness|eBiz alerts|News|Help
Assignments on the Web > Patent Query
Patent Assignment Abstract of Title
NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Total Assignments: 4
Patent #:
Issue Dt:
05/07/2013
Application #:
11778451
Filing Dt:
07/16/2007
Publication #:
Pub Dt:
11/22/2007
Inventors:
Ravi V. J. Chari, Wayne C. Widdison
Title:
CYTOTOXIC AGENTS COMPRISING NEW MAYTANSINOIDS
Assignment: 1
Reel/Frame:
035212/0719Recorded: 03/20/2015Pages: 3
Conveyance:
ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors:
Exec Dt:
05/29/2007
Exec Dt:
05/29/2007
Assignee:
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Correspondent:
CHRISTIANA X. ZHANG, PH.D., J.D.
MCCARTER & ENGLISH, LLP
265 FRANKLIN STREET
BOSTON, MA 02110
Assignment: 2
Reel/Frame:
020930/0905Recorded: 05/13/2008Pages: 9
Conveyance:
ADDRESS CHANGE
Assignor:
Exec Dt:
03/24/2008
Assignee:
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
Correspondent:
SUGHRUE MION, PLLC
2100 PENNSYLVANIA AVENUE, NW
SUITE 800
WASHINGTON, DC 20037
Assignment: 3
Reel/Frame:
063282/0894Recorded: 04/06/2023Pages: 34
Conveyance:
PATENT SECURITY AGREEMENT
Assignors:
Exec Dt:
04/06/2023
Exec Dt:
04/06/2023
Assignee:
C/O BEAUFORT HOUSE, 51 NEW NORTH ROAD
EXETER EX4 4EP, UNITED KINGDOM
Correspondent:
MUSSIE B BEYENE
2001 K STREET N.W.
WASHINGTON DC, DC 20006
Assignment: 4
Reel/Frame:
066553/0109Recorded: 02/12/2024Pages: 34
Conveyance:
RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS).
Assignor:
Exec Dt:
02/12/2024
Assignees:
C/O IMMUNOGEN, INC.
830 WINTER STREET
WALTHAM, MASSACHUSETTS 02451
BAARERSTRASSE 14
ZUG, SWITZERLAND 6300
Correspondent:
JONATHAN BRADFORD
PRUDENTIAL TOWER
800 BOYLSTON STREET
BOSTON, MA 02199-3600

Search Results as of: 05/17/2024 07:12 PM
If you have any comments or questions concerning the data displayed, contact PRD / Assignments at 571-272-3350. v.2.6
Web interface last modified: August 25, 2017 v.2.6
| .HOME | INDEX| SEARCH | eBUSINESS | CONTACT US | PRIVACY STATEMENT