请教美国专利法律状态查询

各位大大！
在美国，如果一件专利在诉讼过程中，因对造之请求，而被法院无效。
那么通过USPTO检索到的专利，有没有办法看到该无效状态的法律讯息？:-)

搜寻到一些讯息。
If a patent is declared invalid by a court, it becomes unenforceable. Unfortunately, there\'s no certain way to know this.

One possible resource is the PatentFizz website - sometimes information about a court case invalidating a patent may be added to their patent database. Also, if you have access to the Lexis or Westlaw or BNA USPQ databases (all available only for substantial monthly fees, unfortunately), you can try looking up the patent number in their databases of reported court cases to see if the patent might have been mentioned in a case report.

可以通过美国专利商标局查到home——patents——View in Piar——Public Piar——Type the two word进入检索界面——输入US专利号——可以查看该专利的法律状态，（abandent，patented，expied等等）