Get a license Find out how to get the licenses you need to run your business, practice a trade, and more. Use eCLIPSE to apply for licenses How to use eCLIPSE to get or renew licenses, permits, and certificates. Business licenses Find out how to get the licenses, permits, and approvals you need to run your business. Trade licenses Get a license to do trade work in Philadelphia. Get a marriage license Requirements, fees, and instructions for obtaining a marriage license from the City of Philadelphia. Get a gun license Application and instructions for getting a gun license in Philadelphia. Get a license for your dog Rules and instructions for getting a dog license in Philadelphia.