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Unidirectional Sampling Mixer

US 8,787,863 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Jul 22, 2026 on the fee record · High confidence

Third maintenance fee unpaid; grace period ended.

Filed Dec 18, 2012 as application 13/718,692 · Granted Jul 22, 2014
Base term, 20 years from filing, plus 42 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 22, 2026
2012 2033
Clock starts
Dec 18, 2012
No longer in force
Jul 22, 2026
Granted
Jul 22, 2014
Term would have run to
Jan 29, 2033
base term patent term adjustment after the term ends 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
42
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
2
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

Its term would have run to Jan 29, 2033: its 20-year base term plus 42 days of term adjustment for prosecution delay. 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 Dec 18, 2012, when this application, 13/718,692, was filedDec 18, 2032High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+42 days, USPTO patent term adjustment recordJan 29, 2033High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidlapsed Jul 22, 2026High confidence
Computed term endThe steps above, in orderJul 22, 2026High confidence

This family

US 8,787,863this patent
Jul 2026
Jul 2026
US 8,977,225In force
Dec 2032
Dec 2032
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
Apr 25, 2013
Reel 30287, frame 831
Uhl, Brecken H.; Law, Daniel A.Invertix CorporationAssignment of Assignor's Interest
Jul 24, 2013
Reel 30888, frame 398
Invertix CorporationPNC Bank, National Association, as Administrative AgentSecurity Agreement
Jul 7, 2014
Reel 33280, frame 542
Invertix CorporationBridge Bank, National AssociatinoSecurity Interest
Jul 11, 2014
Reel 33332, frame 721
Invertix CorporationBridge Bank, National AssociationCorrective Assignment to Correct the Assignee Name Previously Recorded on Reel 033280 Frame 0542. Assignor(S) Hereby Confirms the Assignee Name Is Bridge Bank, National Association.
Jul 15, 2014
Reel 33321, frame 566
PNC Bank, National Association, as AgentInvertix CorporationRelease of Security Interest
Nov 21, 2014
Reel 34476, frame 134
PNC Bank, National Association, as Administration AgentInvertix CorporationPatent Release
Sep 21, 2015
Reel 36609, frame 145
Invertix CorporationAltamira Technologies CorporationAssignment of Assignor's Interest
Nov 8, 2016
Reel 40257, frame 893
Altamira Technologies Corporation; Near Infinity Corporation; Nic Labs LLC; Invertix Corporation; Invertix International, Inc.Multiplier Capital, LPSecurity Interest
Jul 24, 2019
Reel 49848, frame 85
Altamira Merger Sub, Inc.; Altamira Technologies Corporation; Altamira Intermediate Company II, Inc.; Apg Technologies, LLC; Prime Solutions LLCPennantpark Loan Agency Servicing, LLCAssignment of Assignor's Interest
Jul 26, 2019
Reel 49867, frame 548
Western Alliance BankAltamira Technologies CorporationRelease of Security Interest
Jul 26, 2019
Reel 49868, frame 294
Multiplier Capital, LPAltamira Technologies Corporation; Near Infinity Corporation; Nic Labs LLC; Invertix Corporation; Invertix International, Inc.Release of Security Interest
Jul 26, 2019
reel/frame not recorded
Multiplier Capital, LPAltamira Technologies CorporationRelease of Security Interest
Jul 26, 2019
reel/frame not recorded
Multiplier Capital, LPNear Infinity CorporationRelease of Security Interest
Jul 26, 2019
reel/frame not recorded
Multiplier Capital, LPNic Labs LLCRelease of Security Interest
Jul 26, 2019
reel/frame not recorded
Multiplier Capital, LPInvertix CorporationRelease of Security Interest
Jul 26, 2019
reel/frame not recorded
Multiplier Capital, LPInvertix International, Inc.Release of Security Interest
Sep 29, 2023
Reel 65074, frame 75
Altamira Technologies Corporation; Virginia Systems and Technology, Inc.Capital One National Association, as AgentSecurity Interest
Oct 2, 2023
Reel 65085, frame 729
Pennantpark Loan Agency Servicing, LLCAltamira Technologies Corporation; Altamira Intermediate Company II, Inc.; Apg Technologies, LLC; Prime Solutions LLCRelease of Security Interest
Oct 2, 2023
reel/frame not recorded
Pennantpark Loan Agency Servicing, LLCAltamira Technologies CorporationRelease of Security Interest
Oct 2, 2023
reel/frame not recorded
Pennantpark Loan Agency Servicing, LLCAltamira Intermediate Company II, Inc.Release of Security Interest
Oct 2, 2023
reel/frame not recorded
Pennantpark Loan Agency Servicing, LLCApg Technologies, LLCRelease of Security Interest
Oct 2, 2023
reel/frame not recorded
Pennantpark Loan Agency Servicing, LLCPrime Solutions LLCRelease of Security Interest
Jun 10, 2026
Reel 74910, frame 324
Altamira Technologies CorporationParsons Government Services Inc.Assignment of Assignor's Interest
Jun 11, 2026
Reel 74928, frame 26
Parsons Government Services Inc.Parsons CorporationAssignment of Assignor's 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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