The Weight of the Wait (1970)

Celeste (27) waits to be seen by the doctor, while she makes a paper boat and talks to her friend on the phone. The lady next to her wants to buy it, and a lawyer tries to convince her to patent it. Irritated by the meddling, Celeste refuses and turns her back on them — but her rejection forces her into a fight against those trying to profit from a mere piece of paper.