This inventor holds 8 USPTO granted patents and 3 published patent applications. Top assignees: At&t Intellectual Property I, LP, AT&T Mobility, AT&T Mobility II LLC. Active years: 2017-2026.
IDiyas Innovation Intelligence. (2026). Inventor Profile: John Liefert. Retrieved from https://idiyas.com/inventor/john-liefert
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Calculating rank
USPTO Granted Patents = 8 (Patent Applications = 3)
% Patents Active = 87.5
Average Co-Inventor Count = 5.4
ph-index = 2
Forward Citations = 7(Granted Patents)
Company Filing History:
8 out of 16,793 
At&t Intellectual Property I, LP
1 out of 2,871 
AT&T Mobility
1 out of 26 AT&T Mobility II LLC
where one patent can have more than one assignee
Years Active: 2017-2026
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8 patents (USPTO):Explore Patents
I specialize only in this one: innovations, inventions, inventors, patent attorneys, assignees and patents.
Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
3 patents pending:
IDiyas Innovation Intelligence. (2026). Inventor Profile: John Liefert. Retrieved from https://idiyas.com/inventor/john-liefert
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]