A chemical patent, pharmaceutical patent or drug patent is a patent for an invention in the chemical or pharmaceuticals industry. Strictly speaking, in...

of patents. Particular types of patents for inventions include biological patents, business method patents, chemical patents and software patents. Although...

patent 0,147,313 – Chemical Telegraphs U.S. patent 0,147,314 – Circuits for Chemical Telegraphs U.S. patent 0,147,917 – Duplex Telegraphs U.S. patent...

more) free valence(-s) at a carbon atom. The term is often used in chemical patent literature to protect claims over a broad scope.[citation needed] Acetonyl...

business, patent trolling or patent hoarding is a categorical or pejorative term applied to a person or company that attempts to enforce patent rights against...

the same chemical substance as a drug that was originally protected by chemical patents. Generic drugs are allowed for sale after the patents on the original...

nostrums were actually patented; chemical patents did not come into use in the United States until 1925. Furthermore, patenting one of these remedies would...

A biological patent is a patent on an invention in the field of biology that by law allows the patent holder to exclude others from making, using, selling...

A patent application is a request pending at a patent office for the grant of a patent for an invention described in the patent specification and a set...

A software patent is a patent on a piece of software, such as a computer program, libraries, user interface, or algorithm. A patent is a set of exclusionary...