DUOFON

● Live · Pending

U.S. federal trademark · Serial No. 99378536

Mark

DUOFON

Status

Pending

Serial Number

99378536

Filing Date

September 6, 2025

Class(es)

Class 038

Owner

01 · San Carlos, CA, US

Internet telephony services; Telephony communication services; Computer telephony services; Computerised telephony services; Mobile telephony

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Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.