UMCU/Pubmed_PMC_License_Table_2025

Use this to ensure a proper dissemination of your PMC data.

License	Attribution Required	Commercial Use Allowed	Derivatives Allowed	Share-Alike Required	Notes / Typical Use
CC BY	✅ Yes	✅ Yes	✅ Yes	❌ No	Most permissive CC license. Others can remix, adapt, and build upon the work, even commercially, as long as credit is given.
CC BY-SA	✅ Yes	✅ Yes	✅ Yes	✅ Yes	Derivatives must be licensed under the same terms. Often compared to “copyleft” in open-source software.
CC BY-ND	✅ Yes	✅ Yes	❌ No	❌ No	Redistribution allowed, including commercially, but the work must remain unchanged and whole.
CC BY-NC	✅ Yes	❌ No	✅ Yes	❌ No	Allows remixing and adapting, but only for non-commercial purposes.
CC BY-NC-SA	✅ Yes	❌ No	✅ Yes	✅ Yes	Non-commercial use only, and derivatives must use the same license.
CC BY-NC-ND	✅ Yes	❌ No	❌ No	❌ No	Most restrictive CC license: allows downloading and sharing with credit, but no changes and no commercial use.
CC0	❌ No	✅ Yes	✅ Yes	❌ No	Public-domain dedication. The creator waives all rights to the extent possible. No attribution required.
NO-CC CODE	❌ Depends on author	❌ Depends	❌ Depends	❌ Depends	Not a Creative Commons license. Rights and permissions are defined solely by the author or publisher.

You can assume that if the PMC/PMID is not in this table and the document is from before November 30 2025, there is no license and full copy right is reserved.