Once an inital Mechanic lean has taken place,what are the next steps
After filing a mechanics lien, it's important to notify the owner and other project participants about the lien claim. And, from there, it's typically a good start to negotiate payment for the release of the lien claim. If negotiations aren't being taken seriously, threatening to enforce the lien claim could be useful, too. Finally, once all other options are exhausted, but before the lien enforcement deadline (generally 2 years from filing), consulting an attorney to see about enforcing the lien claim is a good move.
For a more detailed breakdown of these steps: The 4 Steps to Take After Filing a Mechanics Lien. This article has useful information, too: Construction Payment: What Is a Notice of Intent to Foreclose? Additionally, this page has great information about PA's mechanics lien rules: Pennsylvania Mechanics Lien Guide and FAQs.