LET'S ENCRYPT
Live / Registered — Registered (as of 22 Sept 2020)
What this means for you
Registered since 22 Sept 2020. The owner can stop confusingly similar uses in the classes it covers.
Record
- Serial number
- 88828174
- Registration number
- 6157921
- Mark type
- Stylized text
- Filed
- 10 Mar 2020
- Published for opposition
- 07 Jul 2020
- Registered
- 22 Sept 2020
- Attorney of record
- BENJAMIN A COSTA
Goods and services
- Class 042 — Scientific and technological services: Certificate transparency (CT) log services, namely, providing electronic logs that record digital certificates issued by publicly trusted certificate authorities, allowing identification of mistakenly or maliciously issued certificates for computer security purposes; Computer security services, namely, maintaining a cryptographically assured, publicly auditable, append-only record of digital security certificates, to which third parties may submit certificates, and which can be queried by third parties to verify that the log is correct or to verify that a particular certificate has been logged
Owner
- Internet Security Research Group, San Francisco, CA, US
- Internet Security Research Group, San Francisco, CA, US
- Internet Security Research Group, San Francisco, CA, US
Prosecution history
- 12 Mar 2026 — TEAS PETITION TO DIRECTOR RECEIVED
- 12 Mar 2026 — TEAS RESPONSE TO OFFICE ACTION-POST REG RECEIVED
- 29 Jan 2026 — POST REGISTRATION ACTION MAILED - SEC. 8 & 15
- 29 Jan 2026 — CASE ASSIGNED TO POST REGISTRATION PARALEGAL
- 27 Oct 2025 — TEAS SECTION 8 & 15 RECEIVED
- 22 Sept 2025 — COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED
- 22 Aug 2025 — TEAS CHANGE OF CORRESPONDENCE RECEIVED
- 22 Aug 2025 — ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
- 22 Aug 2025 — TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
- 22 Aug 2025 — TEAS CHANGE OF CORRESPONDENCE RECEIVED
- 22 Aug 2025 — ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
- 22 Aug 2025 — TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
- 15 Dec 2022 — TEAS CHANGE OF CORRESPONDENCE RECEIVED
- 15 Dec 2022 — ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
- 15 Dec 2022 — TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED