[quote="abhilash2863":ya6ceptv]are you referring to the source of the exporter or the exporter itself here?[/quote:ya6ceptv]
The source code would be closed-source (proprietary). The licenses refer to how the released exporter is given away, not the source code itself, which is private to us.
[quote="BROO":ya6ceptv]Back in time there was some legal actions threaten from CT about re-use of their coding ideas (ACE for instance)[/quote:ya6ceptv]
I don't believe there's any issue here, that all appears to have blown over. Besides, ideas aren't copyrightable - try putting IE9 and Chrome side by side.