Under 37 CFR 1.136, how long is the standard extension of time available for responding to an Office Action, and what triggers additional fees?
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A
Up to 5 months; each additional month beyond the first requires an escalating fee
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B
Up to 3 months; any extension beyond one month requires a fee
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C
Up to 6 months; fees are flat regardless of the extension length
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D
Up to 4 months; only extensions beyond 2 months require fees