Novell Sues Microsoft Over WordPerfect Software  SEATTLE (Reuters) - Novell Inc. sued Microsoft Corp.  &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=MSFT.O qtype=sym infotype=info qcat=news"&gt;MSFT.O&lt;/A&gt; on Friday, claiming that the world's largest software  maker used its Windows monopoly to hurt sales of the  WordPerfect processing program, which the smaller rival owned  briefly a decade ago.