Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: BlackBerry Maker's Patent Suit Upheld  TORONTO/WASHINGTON (Reuters) - A U.S. appeals court upheld  a patent infringement finding against BlackBerry e-mail device  maker Research In Motion Ltd. &lt;A HREF="[Link] target=/stocks/quickinfo/fullquote"&gt;RIM.TO&lt;/A&gt; on Tuesday, but struck  down part of the ruling and sent it back to a lower court for  further proceedings.

Business