We try to ensure that all USPTO websites and automated information systems are compatible with the most commonly used versions of web browsers, which we determine by gathering various metrics and post to our USPTO Open Data site. Please keep in mind that the USPTO routinely develops next generation systems to eventually replace older systems, some of which might have browser compatibility issues. It often does not make sense to expend resources on keeping older scheduled-for-replacement systems compatible with a wide array of browser versions. However, browser vendors (such as Google or Microsoft) tend to remain backwards compatible to a certain degree. If you are having browser compatibility issues, please try changing to a different browser or updating to the most current version.
USPTO Customer Support Centers
For a complete listing of USPTO Customer Support Centers and their hours of operation, please see USPTO Customer Support Centers.