As it turns out, there are as many origin stories for barbecue as there are spellings of the word on neon signs. These explanations range from a linguistic attempt to connect barbecue to boucan (also French) to a tall tale tracing barbecue to a Texas rancher who happened to brand the initials B.Q. on his livestock.
Patent protection usually ends when the patent expires. Here are the expiration dates: For all utility patents filed before June 8, 1995, the patent term is 20 years from date of filing, or 17 years from date of issuance, whichever period is longer.
The cost will vary depending on the type of patent and the number of years that have passed since you filed it. These fees are usually due on or before the anniversary of the filing date of your application. It is up to you to pay on time. Patent protection will stop if the renewal fee is not paid.