Coretec Group Inc (CRTG)

[Quikshft]

You don't think that products have a patent lifetime, well I'll give you just one example of quite a few! The Company Multicell Biopharmas lay dormant for a few years, maybe due to the very old CEO who ran it! At least 2 Companies obtained a number of Medicinal products of MCETs and never looked back? How and why I don't know, but they did it! There is a reason behind the 14-17 year agreement with the USPTO!

I will not again respond to hate and ignorance!!!

This is not an example or a patent that EXPIRED, and then was renewed. Patents last 20 years, then expire. Anyone can search the net to see this is true. You are wrong yet again.

Copy/paste from patenttrademarkblog.com

Can a patent be renewed?

No, you cannot renew a patent in the US. Technically speaking, US utility patents are maintained, not renewed. The connotation of patent maintenance is that there is an end to the patent term, whereas “renewal” implies an indefinite term that continues indefinitely. Patents cannot go on forever, not in the US or anywhere else. As long as you understand that patents will expire, then “patent renewal” may be considered a layman’s term for the more technical term of patent maintenance. Patents cannot be renewed once their terms expire.
When are patent maintenance deadlines?

After a utility patent is granted, there are a total of three maximum maintenance fees that must be paid to keep the issued patent alive:

First maintenance fee: due at 3.5 year anniversary;
Second maintenance fee: due at 7.5 year anniversary; and
Third maintenance fee: due at 11.5 year anniversary.

What if a maintenance fee deadline is missed?

It is possible to pay a late patent maintenance fee with a penalty surcharge as long as you’re still within the 6-month grace period.
How much are patent maintenance fees?

For a small entity (e.g., company with fewer than 500 employees), the USPTO patent maintenance fees are:

1st maintenance fee: $800
2nd maintenance fee: $1,800
3rd maintenance fee: $3,700

Notice how the cost of each successive maintenance fee increases in price. Our firm charges flat rates for paying maintenance fees and filing patent and trademark applications.
How to maintain a patent

Design patents require no maintenance, so only utility patents have maintenance deadlines. The proper maintenance fee must be paid in the 6-month window ending upon the deadlines outlined above. Maintenance fees may electronically paid through the USPTO website.
If you can’t renew patents, then how can you prolong patent rights?

If you cannot renew a patent, are there ways to extend or prolong patent rights? You cannot reapply for the same invention covered in an existing patent. You can, however, file patent applications for improvements and modifications. The extent of your changes will determine whether your new patent application will be considered non-obvious over prior patents.