In the Hatch Patterns in DWG column of the table, click the value for the pattern, and select the desired pattern from the drop-down list.For Load DWG hatch patterns from, navigate to and select the PAT file that contains the desired pattern.How do I export hatch patterns from AutoCAD? Click on your drawing until it gets light blue, and hit Enter.In the Block panel, click on the “Create” command, located in the top right corner.1.In your AutoCAD document, draw a desired pattern using a tool from the Draw panel.How do I create a hatch pattern in AutoCAD 2021? PAT files can be converted to different image formats such as JPG, PNG, BMP, etc. PAT files can be opened in applications such as Autodesk AutoCAD, CorelDRAW Graphics Suite, and Ketron Software.