SELLAS LIFE SCIENCES GROUP
Live / Registered — Registered — Sections 8 & 15 accepted and acknowledged (as of 07 May 2026)
What this means for you
Registered since 18 Feb 2020. The owner can stop confusingly similar uses in the classes it covers; it stays on the register as long as the owner keeps up the maintenance filings (next due by 18 Feb 2030: the §8 & §9 renewal).
Record
- Serial number
- 87599418
- Registration number
- 5991604
- Mark type
- Design + words
- Filed
- 07 Sept 2017
- Published for opposition
- 06 Feb 2018
- Registered
- 18 Feb 2020
- Next maintenance filing
- §8 & §9 renewal, due by 18 Feb 2030 (grace period to 18 Aug 2030)
- Attorney of record
- Karen K. Won
Goods and services
- Class 005 — Pharmaceuticals: Pharmaceutical and biopharmaceutical preparations for the treatment of cancer
- Class 042 — Scientific and technological services: Scientific research and development for medical, pharmaceutical, and biopharmaceutical purposes; consulting in the field of medical, pharmaceutical, and biopharmaceutical research and product development; conducting of clinical trials, for others and development of pharmaceutical products, biopharmaceutical products, and other therapeutic products; development of cancer vaccines and treatment products for cancer
Owner
- SLSG LIMITED LLC, New York, NY, US
- SLSG LIMITED LLC, DOVER, DE, US
- Sellas Life Sciences Group Ltd., Hamilton, BM
- Sellas Life Sciences Group Ltd., Hamilton, BM
Prosecution history
- 07 May 2026 — NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED
- 07 May 2026 — REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.
- 07 May 2026 — CASE ASSIGNED TO POST REGISTRATION PARALEGAL
- 17 Feb 2026 — TEAS SECTION 8 & 15 RECEIVED
- 31 Dec 2025 — TEAS CHANGE OF CORRESPONDENCE RECEIVED
- 31 Dec 2025 — ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
- 31 Dec 2025 — TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
- 31 Dec 2025 — APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
- 31 Dec 2025 — TEAS CHANGE OF OWNER ADDRESS RECEIVED
- 18 Feb 2025 — COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED
- 18 Feb 2020 — REGISTERED-PRINCIPAL REGISTER
- 14 Jan 2020 — NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED
- 13 Jan 2020 — ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED
- 30 Dec 2019 — STATEMENT OF USE PROCESSING COMPLETE
- 18 Dec 2019 — USE AMENDMENT FILED