Draft the commencement papers
You file a summons together with either a complaint or a notice describing the nature of the claim and the relief sought. The complaint should state the parties, the basis for venue in Kings County, the facts in numbered paragraphs, and each cause of action separately with the elements pleaded. Attach the contract, invoices, or notices your claim depends on. Vague pleading is the leading cause of early dismissal motions.
Buy the index number and file
The clerk assigns an index number when the fee is paid. Most Supreme Court matters are filed electronically through NYSCEF; Civil Court practice varies by case type. Keep the stamped copies — every later paper in the case carries that index number, and a mismatched or missing number will get filings rejected.
Calendar the service deadline immediately
Filing starts a clock. If service is not completed and proof of service filed within the statutory window, the case can be dismissed, and by then the limitations period may have run. The day you file, calendar the service deadline, the deadline to file proof of service, and the date the defendant's time to answer will expire.
Think about the defendant's likely answer
Before you file, read your own complaint as the defendant's lawyer would. Which element is thinnest? Which document undermines you? Is there an arbitration clause, a forum-selection clause, or a notice-and-cure provision you skipped? Anticipating the motion to dismiss while drafting is far cheaper than opposing one.