"Tiller also asked for some policy changes to ease the patent stress on the software business. "Since 1994, US litigation costs have substantially exceeded profits from patents," he said, except in the chemical and pharmaceutical industries. "If we can't have a subject matter exclusion for software, is there anything else that can be done?" he asked. Improving patent search tools would help, and requiring source code with a patent application would make it easier for working software developers to identify problem patents, since it's easier for them to read code than the tortured language of patent claims."