When it comes to legal proceedings, filing for something is a common expression. However, there are many synonyms for the phrase "file for" that you can use. Some options include applying for, submitting, registering, initiating, or requesting. Each of these words can be used in different contexts, depending on what you are filing or where you are filing it. For instance, you might "apply for" a patent, "submit" an insurance claim, "register" a business, "initiate" a lawsuit, or "request" a restraining order. Using synonyms for "file for" can help you to avoid overusing a particular phrase, and it can also make your writing more interesting and engaging.