Second, who is performing the method that is patented? If it is a method of creating a software product, then a company could conceivably create the product in China (where you don't have patent protection) and then ship it into the U.S. without infringing.
There might be infringement under 35 USC 271(g) under these facts. 35 USC 271(g) covers the importing of products made overseas by an infringing process. Too complicated to answer in this case.
Also "software patents" may have product claims. You need to analyze infringement for those too.