A contractor builds an early version of a product’s core feature, gets paid, and moves on to other work. Nobody thinks much about the paperwork at the time, since the relationship felt straightforward and the payment was clear. Without a signed intellectual property assignment, the company’s legal claim to that piece of work can be genuinely murkier than anyone involved assumed.
Contractor agreements and IP assignment paperwork rarely feel urgent early on. Skipping them can leave a company’s ownership of its own work genuinely unclear.
Why this gap is so easy to miss early on
Default assumptions about work-for-hire vary by jurisdiction and by the specific nature of the work, and they do not automatically guarantee that a company owns everything a contractor built simply because the contractor was paid. Founders reasonably assume that payment settles ownership, and in many cases it effectively does, informally, until a dispute, an acquisition, or a due diligence process specifically asks for documentation proving it — documentation that, without a signed agreement, may not clearly exist.