"Regarding the availability of the standard for implementation and use, this is where intellectual property rights, or in other words the business part of the concept of open standards, come into play. This is where the controversy around the concept of open standards is rooted. The strongest debate is held over the criterion that an open standard ought to be available on royalty-free terms. While some welcome this criterion in particular for software interoperability standards others oppose it because they feel that it negates the principle of remuneration for patented technology and poses a threat to innovation. As a consequence, a multitude of definitions has been produced mainly conflicting in the point on licensing terms of Intellectual Property Rights (IPRs) in standards."