unpatented

1. Second, many companies used things that were not protected by patents to promote new models, for example, the Internet was based on unpatented technologies in the public domain.
   第二，许多公司使用不受专利保护的技术来推广新产品，例如，互联网就是基于公有领域中不受专利保护的技术发展起来的。
2. Declaring an unpatented technology in the contract to be a patented technology;
   在合同中将非专利技术称为专利技术；
3. Ogg Vorbis is a new kind of audio compression format. Because it is free, open-source, unpatented and technically advanced, people make more and more account of Ogg Vorbis. It seems to have good vistas of development and application.
   OggVorbis是一种新型的音频有损压缩编码格式，因其开源、免专利的特性和技术上的优势，获得了越来越广泛的重视，有着很好的发展和应用前景。

adj

1. (of devices and processes) not protected by patent
   1. unpatented inventions