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US

Dialog Server for Handling Conversation in Virtual Space Method and Computer Program for Having Conversation in Virtual Space

US 8,554,841 In force
OverviewFamilyAssignmentsSources & methods

Term ends Feb 19, 2029 · High confidence

Filed Feb 28, 2012 as application 13/406,954 · Granted Oct 8, 2013
Base term, 20 years from filing
Today
20 years from filing
2009 2029
Clock starts
Feb 19, 2009
Term ends
Feb 19, 2029
Granted
Oct 8, 2013
base term fee events Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
4
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Feb 19, 2009, when application 12/389,073, the earliest non-provisional in its chain, was filed (this one was filed Feb 28, 2012)Feb 19, 2029High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderFeb 19, 2029High confidence

This family

US 8,156,184In force
Dec 2029
Dec 2029
US 8,554,841this patent
Feb 2029
Feb 2029
US 9,583,109In force
Feb 2029
Feb 2029
US 10,001,970In force
Feb 2029
Feb 2029
The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Feb 28, 2013
Reel 29900, frame 285
International Business Machines CorporationActivision Publishing, Inc.Assignment of Assignor's Interest
Feb 11, 2014
Reel 32240, frame 257
Activision Publishing, Inc.Bank Of America, N.a.Security Agreement
Sep 20, 2016
Reel 39804, frame 23
Kurata, Gakuto; Nagano, Tohru; Tatsubori, MichiakiInternational Business Machines CorporationNunc Pro Tunc Assignment
Oct 17, 2016
Reel 40381, frame 487
Bank Of America, N.a.Activision Blizzard Inc.; Activision Publishing, Inc.; Activision Entertainment Holdings, Inc.; Blizzard Entertainment, Inc.Release of Security Interest
Oct 17, 2016
reel/frame not recorded
Bank Of America, N.a.Activision Blizzard Inc.Release of Security Interest
Oct 17, 2016
reel/frame not recorded
Bank Of America, N.a.Activision Publishing, Inc.Release of Security Interest
Oct 17, 2016
reel/frame not recorded
Bank Of America, N.a.Activision Entertainment Holdings, Inc.Release of Security Interest
Oct 17, 2016
reel/frame not recorded
Bank Of America, N.a.Blizzard Entertainment, Inc.Release of Security Interest

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

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