4 ms·

Wouldn't the patent be expired?

• jtwaleson 3y ago
  Yes, there’s a 20 year maximum duration for patents. Depending on some technicalities it could be a year or two longer but definitely under 26. Unless someone created additional patents with improvements.
• virtue3 3y ago
  potentially? but you can also extend a patent by adding to it by patenting an improvement on the patent. :/
  • account42 3y ago
    That doesn't extend the original patent duration, it's just a new patent for a related invention.