IP Library › Assignment 015125/0761
Patent Assignment
Reel/Frame 015125/0761

Assignment of Assignor's Interest

Recorded: 2004-03-22 Pages: 7
Assignors
BIRRELL, ANDREW D.
Executed: 2004-03-22
BURROWS, MICHAEL
Executed: 2004-03-22
WOBBER, EDWARD PEARCE
Executed: 2004-03-22
Assignee
MICROSOFT CORPORATION
ONE MICROSOFT WAY, REDMOND, WASHINGTON, 98052
Covered Property (1)
Cryptographic Puzzle Cancellation Service for Deterring Bulk Electronic Mail Messages
Patent: 7,660,993 →
Application: 10/806,020 →
Publication: US 2005/0210258
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Dec 9, 2014
From: MICROSOFT CORPORATION
To: MICROSOFT TECHNOLOGY LICENSING, LLC
Reel/Frame 034541/0477 →