Patent Cooperation Treaty

The filing of a Patent Cooperation Treaty, or PCT, application is quite expensive, and therefore it is only cost effective if five or more foreign countries are of interest. The choice of countries in which to file, whether under the Patent Paris Convention, or the PCT, depends on the market for the invention. For example, there may be a market for scuba diving equipment in one country and for ski equipment in another. If you have more questions, we suggest consulting with an experienced patent attorney.