Summary of the article：

An invention patent with specific parameters would include “parametric claims”. A parametric claim is one that defines a product in terms of its specific parameters, such as directly measurable physical properties (e.g. size, proportions) of a product claim. The patent claim interpretation and judgement of patent infringement of patent with specific parameters are different from other invention patents and there are special examination guidelines for determining obviousness of parametric claims. In this article, the principle of non-obviousness and infringement judgment on inventions with parametric claims and relevant court decisions would be examined.

If you are interested in reading the full article, you could download the complete article at the end of the page.