No, Fermat's conjecture is not a practical technology or invention. It is just a mathematical problem with no practical application value.
Fermat's conjecture refers to a mathematical problem about prime numbers and modular operations, which was proposed by the French mathematician Fermat in 1637. This conjecture has important historical significance in the field of mathematics. It has been widely studied and tried to prove many times. It is not a technology or invention that can be patented.