What is the significance of the kind code in foreign patent documents?

The kind code in foreign patent documents is an important indicator of the document’s nature. The MPEP explains:

“The kind of document is indicated by the appropriate document code following the country code.“

Kind codes typically denote:

• The type of patent document (e.g., application, granted patent)
• The stage of publication
• Specific variations within a country’s patent system

Understanding kind codes is crucial for accurately identifying and citing foreign patent documents in USPTO proceedings.

To learn more:

• Kind code
• Foreign patents
• Document classification