Why is it necessary to pay twice for patents that may be essential to both the G.729 and the G.723.1 standards?
The portfolios of patents essential to each standard are different even if some of the patent holders are the same. The standards were originally dedicated to different applications, and essential patent holders have thus established two different licensing entities (the G.729 Consortium and the G.723.1 Group) to address the different needs of potential licensees. The pricing structure for each of these standards was established by validating market acceptance for the overall portfolio.
