How does the title of a patent application affect its classification?

This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice.

The title of a patent application plays a significant role in its initial classification. According to MPEP 606:

The title of the invention may not exceed 500 characters in length and must be as short and specific as possible.

The title’s impact on classification includes:

• Initial sorting: The title is often the first piece of information used to categorize the application.
• Technology field identification: A clear, specific title helps quickly identify the relevant technology field.
• Examiner assignment: The title can influence which art unit and examiner are assigned to the application.
• Prior art searches: An accurate title can guide more effective prior art searches.

While the abstract and claims ultimately determine the final classification, a well-crafted title ensures the application starts in the right direction, potentially speeding up the examination process and improving the quality of the initial review.