1. We have to go to the government patent office to register the new trademark.
    我们必须去专利局注册新的商标。

2. He applied for a patent on his invention.
    他为他的发明申请了专利.

3. He got his patent (专利) on the telephone on March 7, 1876. It is one of the most valuable patents ever given by the U.S.
    他于1876年3月7日获得到了发明电话的专利。这是美国所批准的最有价值的专利之一。