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Eclipse Public License, version 1.0

From GPLv3 Wiki

The Eclipse Public License is similar to the Common Public License, version 1.0 (CPL) and our comments on the CPL apply equally to the EPL. The only change is that the EPL removes the broader patent retaliation language regarding patent infringement suits specifically against Contributors to the EPL'd program.

The EPL is expected to be compatible with version 3 of the GNU GPL (according to Eben Moglen[1]).

According to Mike Milinkovich (Executive Director of the Eclipse Foundation) by email:

It is our view that unfortunately there are several restrictions in GPLv3 that prevent the EPL in its current form from being included in a GPLv3 project. One example issue is that the EPL states that it is to be interpreted under the laws of New York, which AFAICT is not permitted under the GPLv3.

In other words, in its current form we do not believe that the EPL and GPLv3 will be compatible. Believe me, we're as disappointed as anyone, as we had high hopes when the process first started.

On the question whether it would be ever possible to allow a derived product to be licensed under a single license (for instance the GPL):

I believe that the EPL allows re-distribution of EPL code with other licenses, but the EPL does not allow code contributed under it to be re-licensed under another license.