Apple wants the U.S. International Trade Commission to dismiss five patents that Google issued to HTC last year. Hey, if they aren't Apple patents, they obviously can't be valid. Duh.
"Partial termination of the investigation" is the equivalent of a dismissal with prejudice of claims brought in a federal lawsuit. "Lack of standing" means that Apple says HTC does not have the right to bring an infringement lawsuit in general, or at least an ITC complaint in particular, over those patents.