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OpenThai is a registered trademark of iApp Technology

· 3 min read
Kobkrit Viriyayudhakorn
Kobkrit Viriyayudhakorn
CEO @ iApp Technology

With OpenThai 2.0 reaching thousands of developers this week, we would like to make one thing clear for everyone building on it: OpenThai — the name and the logo — is a registered trademark of iApp Technology Co., Ltd., registered with Thailand's Department of Intellectual Property under registration no. 251122938.

This is a housekeeping note, not a policy change. The models are open and stay open. This post simply puts the ownership on the record and explains how the name may be used.

The registration​

OpenThai trademark registration certificate issued by the Department of Intellectual Property, Thailand
TrademarkOpenThai (name and logo)
Registration No.251122938 (Application No. 240121032)
Class9 — computer programs, interactive computer programs, data processing programs
Registered9 May 2024 · Certificate issued 22 July 2025
Term10 years from registration, renewable (current term to 8 May 2034)
Issued byTrademark Office, Department of Intellectual Property, Thailand

The registration covers the OpenThai brand and its continued versions — OpenThai 2.0, OpenThai 2.0 Legal, and releases that follow. The certificate is published on our Awards & Recognition page, and the document itself is here: OpenThai trademark certificate (PDF).

What stays exactly as it is​

The OpenThai models are released under the Apache 2.0 license, and none of that changes:

  • Download the weights, run them anywhere, self-host them for commercial work.
  • Fine-tune, quantize, modify, and redistribute under the terms of the license.
  • Say, factually, that your product is "built on OpenThai 2.0" or "fine-tuned from OpenThai 2.0" — accurate references to the model you build on are welcome and always have been.

We built OpenThai to be used. Seeing it inside other people's products is the point.

Where the trademark comes in​

The one thing the registration reserves is the brand itself: using the OpenThai name or logo as the name or identity of your own product, service, hosted API, or company requires our written permission. The trademark exists so that users can tell which releases and services are official — that clarity protects everyone who builds on the models as much as it protects us.

If you are planning something under the OpenThai name, or are unsure whether your use needs permission, write to us at sale@iapp.co.th. We respond quickly, and we are glad to see the ecosystem grow.

Built by iApp Technology, published openly with AIEAT — by Thais, for Thailand.