What does "account stated" mean in a California debt collection lawsuit?

This shows up constantly in debt buyer complaints, and it's worth understanding since it's frequently the weakest link in their case rather than the strongest. The theory goes: you got periodic statements, never objected, and your silence effectively locked in the balance as accurate.

Debt buyers, companies that purchase old debts from the original lender for pennies on the dollar, lean on this specific theory because it sidesteps having to produce your original signed agreement, they just need to show statements went out and nothing came back disputing them. In practice, that's a harder thing to prove than it sounds, especially on accounts that bounced between several buyers over the years. Whether those statements were ever actually sent, to the right address, at the right time, is a legitimate thing to challenge on its own.