License classification for fraunhofer-fdk-aac-codec

The classification as "Copyleft Limited" for fraunhofer-fdk-aac-codec seems wrong for two reasons:

1. It is not an open source license since it explicitly excludes a patent license ("3. NO PATENT LICENSE", "Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
individually for the purpose of encoding or decoding bit streams in products that are compliant with
the ISO/IEC MPEG audio standards."

2. There is no limitation for the requirement to provide the source code of modified versions, in particular the copyleft is not restricted to libraries ("You must make available free of charge copies of the complete source code of the FDK AAC Codec and your modifications thereto to recipients of copies in binary form." - "modification" could be interpreted as in GPL-3.0).

I suggest to classify the license as "Proprietary" (which seems to be called "commercial" - which is misleading since all FOSS can be commercially used)