Various masaail of Business and Dealings

Registering a company name

Q: Is it permissible to register a company name? Once registered, nobody has the right to use this name except myself. Also, what is the ruling regarding registering a product name under my name? After this, nobody can give their product this name except myself.

Offer and acceptance of a business transaction through actions

Q: I recently read that a sale takes place with a verbal offer and acceptance from both parties. However, in today’s times, we notice that at the time of purchase, customers merely place the money on the counter while the cashiers hand over the goods without any words being exchanged.  Will the sale be valid in these cases as no verbal offer and acceptance is apparently found?