In this blog, we are sharing the answers to four of the most commonly asked questions the PA Business OneStop Shop receives about business registration. Learn about forming and registering your business online, and how to complete other types of business filings.We've got all the information you need on how to perform a PA corporation search, plus LLC naming rules, fictitious names and registering your business. This blog simplifies the process of business registration with a stepbystep guide. It offers tips and resources for help. To file for a DBA in Pennsylvania, you'll need to complete a Fictitious Name Registration Form. When registering LLCs and corporations, you'll need to choose a name that is unique and dissimilar to another business. The state of Pennsylvania does not require registration if you are operating the business under your own legal name. To form an LLC, a Certificate of Organization is required to be filed with the Corporation Bureau of the. Creating your LLC in Pennsylvania requires you to file one Certificate of Organization and a Docketing Statement with the Pennsylvania Department of State.