This is a list of current open hardware licenses. This table is ported from this Open Hardware Licenses report.
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|
TAPR OHL (v.1.0)
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CERN OHL (v.1.2)
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CERN OHL-S (v.2.0)
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CERN OHL-W (v.2.0)
|
CERN OHL-P (v.2.0)
|
TDPL (v. 1.2)
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Solderpad (v. 2.0)
|
| Allows proprietary derivatives
|
No
|
No
|
No
|
No
|
Yes
|
No
|
Yes
|
| Allows unmodified redistribution
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
| Allows combination with proprietary designs
|
No?
|
No?
|
No
|
Yes
|
Yes
|
No?
|
Yes
|
| Allows redistribution under a different licence
|
No
|
No
|
No
|
No
|
Yes
|
No
|
Yes
|
| Allows changing the text of the licence
|
No
|
No
|
No
|
No
|
No
|
No
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Yes
|
| Requires notifying changes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
| Requires providing the location for the documentation
|
Yes
|
Yes
|
Yes
|
Yes
|
No
|
Yes
|
Yes
|
| Requires providing a copy of the licence
|
Yes
|
Yes
|
Recommended
|
Recommended
|
Recommended, required if redistributing under a different licence
|
Yes
|
Yes
|
| Requires contacting upstream licensor when distributing modified documentation
|
Best effort attempt
|
No
|
No
|
No
|
No
|
No
|
No
|
| Requires contacting the upstream licensor when producing and distributing products
|
Best effort attempt
|
Optional
|
No
|
No
|
No
|
No
|
No
|
| Requires including the old files with the new, modified files in the documentation
|
Yes
|
No
|
No
|
No
|
No
|
No
|
No
|
| Requires copyright notice to be kept in documentation files
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
| Requires Notices to be accessible to those who receive products
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
No?
|
| Grants non-exclusive patent licence
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
| Extends patent litigation immunity to owners of OH-based products
|
Yes
|
No
|
No
|
No
|
No
|
Yes
|
No
|
| Includes patent retaliation clause in event of litigation
|
No
|
No
|
Yes
|
Yes
|
Yes
|
No
|
Yes
|
| Includes grace period for bringing the infringing party into compliance
|
No
|
No
|
Yes
|
Yes
|
N/A
|
No
|
No
|
| Grants trademark licence
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No
|
No
|
No
|
No
|
No
|
No
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No
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| Provides no warranty or guarantee of fitness for any use or purpose
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Yes, but with one exception
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Yes
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Yes
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Yes
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Yes
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Yes
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Yes
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Page data
| SDG |
|
| Authors |
Luis Felipe Murillo, Pietari Kauttu, Laia Pujol Priego, Andrew Katz, Jonathan Wareham |
| License |
CC-BY-SA-4.0 |
| Ported from |
https://gitlab.com/unixjazz/oh-licenses-contrasts/-/blob/master/OSM-OH-licenses-final.pdf (original) |
| Language |
English (en) |
| Translations |
Spanish |
| Related |
1 subpages, 6 pages link here |
| Views |
174 page views (analytics) |
| Created |
December 4, 2020 by Joshua M. Pearce |
| Last edit |
July 13, 2023 by StandardWikitext bot |
| Cite as |
Luis Felipe Murillo, Pietari Kauttu, Laia Pujol Priego, Andrew Katz, Jonathan Wareham (2020–2023). "Open hardware licenses". Appropedia. Retrieved June 21, 2026. |
| API queries |
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