Which practice is NOT in accordance with the provisions of the MPEP?

The correct choice indicates that the practice of requiring applicants to use English units of measurement is not in accordance with the provisions of the Manual of Patent Examining Procedure (MPEP). In fact, the MPEP allows applicants to use either the Imperial system (English units) or the metric system when submitting their applications. This flexibility accommodates applicants from various regions and industries, where different measurement systems may be standard.

The guidelines promote clarity and accessibility in the documentation without imposing unnecessary restrictions on the units of measure. Therefore, the assertion that applicants must use solely English units is misleading and does not reflect the current practice as outlined in the MPEP.