Example: ul > li will match all <li> elements that are inside a <ul> element. Descendant selectors. The ' ' combinator selects nodes that are children (not necessary direct children) of the former specified element. Example: div span will match any <span> element that is inside a <div> element.
Generic Firazyr. Because a patent is in place until  July 2014, companies are currently not allowed to make a generic version of Firazyr (icatibant). However, after this patent expires, a generic product may become available.
Patents with 1380+ answers. Most utility patents expire 20 years after the earliest filing date, assuming the owner pays maintenance fees. Design patent expire in 14 years after they are issued. Depending on how slow is the US patent office, some US patents may get term extensions; however, no matter what, all patents do eventually expire. For more details, read: 2701-.