What is the Patent Classification Retrieval System (PCRS)?
The Patent Classification Retrieval System (PCRS) is a valuable tool for accessing patent classification information. As described in MPEP 902.03(b): “The Patent Classification Retrieval System (PCRS) provides Original (OR) and Cross-Reference (XR) classification information for individual patents and listings of patents contained in subclasses. This data is updated bimonthly with new issues, withdrawn patents and…
Read MoreWhat is the process for determining the original classification of a patent?
The process for determining the original classification of a patent involves several steps: Review the allowed claim to determine the subject matter covered. Determine all mandatory classifications. Select the original (OR) classification based on specific criteria. The MPEP states: After all mandatory classifications have been determined, the classification to be designated as the original (OR)…
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