266 MHz or higher Pentium Processor 266 MHz or higher (or similar AMD Processor)
Internet connection at 56 Kbps or faster
128 MB RAM
Microsoft Windows 98SE, Windows ME, Windows2000 with Service Pack 2 or later, Windows NT 4.0 with Service Pack 6 or later or Windows XP with Service Pack 1
A proxy-capable Web browser. The USPTO/Direct client for Windows 98SE,Windows NT 4.0, Windows 2000 and Windows XP supports the following browsers: