1, according to the query of periodical catalogue network, the concept is different: invention patent is a kind of domestic patent with high gold content, and pct patent is one of the most commonly used methods to apply for international patent, which is the English abbreviation of patent cooperation treaty.
2. Time is different: it is also difficult to apply for an invention patent with high gold content. The substantive examination of invention patents takes two to three years, which is longer than other types of patents. Pct patent application takes 18 months, and the specific time will depend on the specific patent and the application country.