With the latest internal build, using RadPdfProcessing we can import and extract all geometrical path definitions from a pdf document in a very robust fashion, well done! However, it seems like we cannot extract any layer definitions(name, visibility) and the association definition between a layer and its referencing geometry paths. 

Definitely a critical piece that needs to be included in RadPdfProcessing because the extraction of layer definitions is as important as the extraction of geometry definitions and usually one would expect them to come hand-in-hand when extracting content out from a pdf document.

Nonetheless, well done with the current iteration of the RadPdfProcessing, its almost there!
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http://feedback.telerik.com/Project/184/Feedback/Details/190020 
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