# Copyright ownership of Glyphs.app-made GSUB or fpgm/prep tables?

**URL:** <https://forum.glyphsapp.com/t/copyright-ownership-of-glyphs-app-made-gsub-or-fpgm-prep-tables/22412>\
**Category:** Glyphs\
**Tags:** resolved\
**Created:** [April 29, 2022, 8:08am UTC](https://forum.glyphsapp.com/t/copyright-ownership-of-glyphs-app-made-gsub-or-fpgm-prep-tables/22412 "2022-04-29T08:08:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![twardoch](https://forum.glyphsapp.com/user_avatar/forum.glyphsapp.com/twardoch/32/13016_2.png) [@twardoch](https://forum.glyphsapp.com/u/twardoch)\
**Post date:** [April 29, 2022, 8:08am UTC](https://forum.glyphsapp.com/t/copyright-ownership-of-glyphs-app-made-gsub-or-fpgm-prep-tables/22412/1 "2022-04-29T08:08:07Z")

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(Asking for a client for whom I’m consulting):

If I own complete copyright over a font, and I use Glyphs.app to add some TT hinting or some OT features, and export a TTF file, what is the legal status of the TT hinting and the OT layout code that is part of the TTF?

Does Glyphs GmbH retain copyright over any portions of the exported fonts? For example of the fpgm or prep tables, or of the GSUB tables?

Or does Glyphs.app transfer the copyright to me? Or does Glyphs.app grant me some license? Or is the code copyright-free or public domain?

I couldn’t find anything on that topic in the Glyphs EULA.

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**Author:** ![GeorgSeifert](https://forum.glyphsapp.com/user_avatar/forum.glyphsapp.com/georgseifert/32/259_2.png) [@GeorgSeifert](https://forum.glyphsapp.com/u/GeorgSeifert)\
**Post date:** [April 29, 2022, 9:12pm UTC](https://forum.glyphsapp.com/t/copyright-ownership-of-glyphs-app-made-gsub-or-fpgm-prep-tables/22412/2 "2022-04-29T21:12:10Z")

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That is a good question. We will write something down to clarify this.

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**Author:** ![sangiem](https://forum.glyphsapp.com/letter_avatar_proxy/v4/letter/s/ba9def/32.png) [@sangiem](https://forum.glyphsapp.com/u/sangiem)\
**Post date:** [March 5, 2023, 11:41am UTC](https://forum.glyphsapp.com/t/copyright-ownership-of-glyphs-app-made-gsub-or-fpgm-prep-tables/22412/3 "2023-03-05T11:41:56Z")

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Is there an update on this or place to find the answer/writeup?