What are examples of claim language that have been held to be indefinite regarding numerical ranges?

The MPEP provides specific examples of claim language involving numerical ranges that have been held to be indefinite. These examples illustrate potential issues with clarity and definiteness in patent claims. As stated in MPEP 2173.05(c): “Examples of claim language which have been held to be indefinite are: (A) “a temperature of between 45 and 78…

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