Learn all about contract law, including considerations related to the creation and enforcement of contracts. Our contract law practice can help deal with all manner of business agreements.We can help you with every step in the contract process. All trade contractors need to complete our Subcontractor Qualification Application to be eligible to bid on our projects and contract with Clark. Discovery is a vital stage during every business litigation. It involves obtaining relevant facts, information, and documents about the business dispute. Clark requires suppliers to receive Purchase Orders and submit Invoices electronically either via Coupa Supplier Portal (CSP) and cXML. Transmission. Below are links to help you find out about opportunities in Clark County, contact members of the local business community, and get a business license. Our attorneys provide solid foundations for business contracts and transactions. The Clark Guldin firm serves New York and New Jersey.