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Re: Open CASCADE Technology Public License

Scripsit Aurelien Jarno <aurelien@aurel32.net>

> The license is available on http://www.opencascade.org/occ/license/
> but I have copied it below so that people can make comments directly
> on it.

It looks like an attempt to reinvent the GPL. The wording is a bit
sloppy at places, but I didn't find anything in the license itself I
would call nonfree.

> The introduction of the license states that that modifications shall
> be sent back (which makes it non-DFSG compliant), however there is
> nothing like that in the license itself. I will ask the company for
> clarifications on that part,


>  From my point of view the only problem is the trademarks, but we can
> actually call it with an other name, it is often called occ.

The trademark clause is actually nice, and could be used as a model of
how to do that kind of things Right:

> 10. Trademark
> This License does not grant any rights to use the trademarks, trade
> names and domain names "MATRA", "EADS Matra Datavision", "CAS.CADE",
> "Open CASCADE", "opencascade.com" and "opencascade.org" or any other
> trademarks, trade names or domain names used or owned by the Initial
> Developer.

It just says "beware that this is not a trademark license", and as
such it is a legal no-op - a license that did not say this explicitly
would not be a trademark license either.

The problematic kind of trademark clauses is the one that says "you
lose your _copyright_ license if you use our trademark in ways we're
not happy with".

Henning Makholm             "Jeg forstår mig på at anvende sådanne midler på
                           folks legemer, at jeg kan varme eller afkøle dem,
                    som jeg vil, og få dem til at kaste op, hvis det er det,
                  jeg vil, eller give afføring og meget andet af den slags."

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