STRK
Live / Registered — Registered (as of 10 Feb 2026)
What this means for you
Registered since 10 Feb 2026. 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 10 Feb 2032: the §71 affidavit of use).
Record
- Serial number
- 79393203
- Registration number
- 8131505
- Mark type
- Word mark
- Filed
- 25 Feb 2024
- Published for opposition
- 23 Dec 2025
- Registered
- 10 Feb 2026
- Next maintenance filing
- §71 affidavit of use, due by 10 Feb 2032 (grace period to 10 Aug 2032)
- Attorney of record
- Anna Kurian Shaw
Goods and services
- Class 009 — Scientific and electric apparatus: Downloadable computer software and recorded computer software for computational integrity and blockchain technology, namely, downloadable and recorded computer software for verifying payment transactions, verifying updates to databases, transacting over blockchains, conducting blockchain transactions, and verifying state changes in applications running over blockchains; Downloadable mobile applications for use as self-custody cryptocurrency wallets
- Class 036 — Insurance and financial services: Cryptocurrency trading services; electronic transfer of cryptocurrency; cryptocurrency exchange services
- Class 042 — Scientific and technological services: Providing online non-downloadable cloud-based software for computational integrity and blockchain technology, namely, providing online non-downloadable cloud-based software for verifying payment transactions, verifying updates to databases, transacting over blockchains, conducting blockchain transactions, and verifying state changes in applications running over blockchains; software as a service (SAAS) services featuring software for computational integrity and blockchain technology for verifying payment transactions, verifying updates to databases, transacting over blockchains, conducting blockchain transactions, and verifying state changes in applications running over blockchains
Owner
- Tzolkin Limited, GB
- Tzolkin Limited, GB
- Tzolkin Limited, GB
- Tzolkin Limited, GB
- StarkWare Industries Ltd., IL
Prosecution history
- 03 Sept 2026 — FINAL DECISION TRANSACTION PROCESSED BY IB
- 13 Aug 2026 — FINAL DISPOSITION NOTICE SENT TO IB
- 12 Aug 2026 — FINAL DISPOSITION PROCESSED
- 09 Jul 2026 — CHANGE OF NAME/ADDRESS REC'D FROM IB
- 10 May 2026 — FINAL DISPOSITION NOTICE CREATED, TO BE SENT TO IB
- 10 Feb 2026 — NOTICE OF REGISTRATION CONFIRMATION EMAILED
- 10 Feb 2026 — REGISTERED-PRINCIPAL REGISTER
- 23 Dec 2025 — OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED
- 23 Dec 2025 — PUBLISHED FOR OPPOSITION
- 17 Dec 2025 — NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED
- 24 Nov 2025 — APPROVED FOR PUB - PRINCIPAL REGISTER
- 24 Nov 2025 — EXAMINER'S AMENDMENT ENTERED
- 24 Nov 2025 — NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED
- 24 Nov 2025 — EXAMINERS AMENDMENT E-MAILED
- 24 Nov 2025 — EXAMINERS AMENDMENT -WRITTEN