Hi,
I'm currently writing an import filter to import free flow pdf text into Scribus for editing but i'm aware that there's no free pdf editor worth it's salt because pdf is patent encumbered. as a result all pdf editors that let you edit free flow pdf text are quite expensive and the free versions often limited by watermarks. anyhow, i hope i've avoided any patent issues as layout and fonts used bare no resemblance to anything pdf uses as I aggregate all the text and use Scribus's quite advanced layout engine to do the bulk of the heavy lifting with some vaguely intelligent aggregation code to aggregate the text in the filter.
anyhow,
can anyone give me a heads up on pdf and patents?