The EPL, however, requires that anyone distributing the work grant every recipient a license to any patents that they might hold that cover the modifications they have made.

[11][8] Changes and additions which do constitute a derivative work must be licensed under the same terms and conditions of the EPL, which includes the requirement to make source code available.

[8] Linking to code (for example to a library) licensed under EPL automatically does not mean that your program is a derivative work.

[14] Version 2.0 of the Eclipse Public License (SPDX code EPL-2.0) was announced on 24 August 2017.

If this optional designation is absent, then the Eclipse license remains source incompatible with the GPL (any version).

[15]: §3 In addition to the Eclipse Foundation, the EPL is used in some other projects, especially those running on the Java virtual machine.