Interesting point from the article:

  A legal expert on intellectual property cases, who
  declined to be named, asserted that when pictures are
  filed both in the complaint and in separate
  productions, those in the complaint would be
  considered more important. **Visual evidence presented
  there typically indicates that the plaintiff wants to
  emphasize its significance, he said.** 

Presumably Apple are pretty experienced in the intricacies of patent law so I don't think you can blame the intern who can't use Photoshop...