Trademark usage (e.g. "ASIO" name or logo) is optional under GPLv3 License, but, if used, must comply with Steinberg's official trademark rules, just like under the proprietary license.

If you choose to use the ASIO Compatible Logo or refer to the ASIO trademark under either license:

• Logos must be used in unaltered form.
• Use must follow the official usage guidelines provided in the SDK.
• The trademark/logo must appear only in clear product-related contexts, such as:
  • Splash screens
  • About boxes
  • Product websites
  • Documentation and manuals

This ensures legal compliance and brand consistency.

• Using “ASIO” (or derivatives like “ASIOi”) in company or product names.
• Applying the logo or trademark to non-ASIO-compatible products.
• Associating the trademark with offensive, obscene, or inappropriate content.

(Applies If Trademark or Logo Is Used — GPLv3 or Proprietary)

If you choose to display the ASIO trademark and/or ASIO Compatible Logo, you must observe the Steinberg ASIO Usage Guidelines.

Purpose: To assist Steinberg in enforcing and protecting the ASIO trademark in international jurisdictions.

• The Steinberg ASIO Usage Guidelines are included in the SDK.
• Use of branding is not required under GPLv3 License, but if you choose to use it, trademark compliance is mandatory.
• Non-compliance with logo guidelines does not affect your GPLv3 rights (but may result in trademark violations).

Although optional, we encourage developers using ASIO under GPLv3 License to follow the Steinberg ASIO Usage Guidelines:

It fosters ecosystem-wide recognition, improves end-user trust, and supports the long-term visibility of the ASIO brand.