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Q49.Use of Ambiguous Terms

Q49.Use of Ambiguous Terms
 Do ambiguous terms indicating extent automatically render a claim invalid due to indefiniteness?

A49. As a rule, ambiguous terms indicating extent shall not be used when writing a claim. If there are expressions where the standard or degree of comparison is unclear such as
“with slightly greater specific gravity,” “much bigger,” “low temperature,” “high temperature,” “hard to slip,” “easy to slip” or where the meaning of the term is unclear, there are some cases that the scope of the invention is not clear.