Identification and determination of non-preemptable calls

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8792621
APP PUB NO 20130230153A1
SERIAL NO

13864403

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An active call between two parties can be marked as a non-preemptable call if one of the two parties is an authorized agency that desires to prevent premature termination of the call by a third party. The authorized agency sends a signal to a main switch to indicate that non-preemptable call status is desired. The newly established call status is then propagated to other nodes in the system to prevent premature call termination. Non-preemptable status can also be granted to some calls based on the destination of the called number, such as in 911 calls.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • AT&T MOBILITY II LLC

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Daly, Brian K Peachtree Corners, US 30 798
Sennett, DeWayne Allan Redmond, US 96 1793

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 29, 2026
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00