Huh? What? This isn't remotely true at all, not in the least. You can sue a company in small claims court all you want, a company can and does also sue you in small claims court as well. My sister in law was sued in small claims court by a large company.
If that were true nobody would be allowed to sue their landlord since many (most?) landlords operate as LLCs. Small claims court is the primary way landlord-tenant laws are enforced.
Even if it was, nobody brings a small claims case in federal court, even if that was allowed. You bring a case in your State court and every single State has different rules and procedures for small claims court.
Most people don’t realize how easy it is to file a small claims court, and how good your odds are. You don’t even need a lawyer and it could cost only $50 in filing fees. To learn more about how to file in small claims, check out our posts, “How To File A Lawsuit” and “Suing Big Companies In Small Claims Court Is Fun And Easy.”