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 This data is updated bimonthly with new issues, withdrawn patents and reclassifications.“
The PCRS is an essential resource for patent examiners, attorneys, and researchers to retrieve up-to-date classification information for specific patents and subclasses.
To learn more: