IP Comparison
Patent vs Trademark
These two get confused constantly, but they could hardly be more different. The simplest way to keep them straight: a patent protects what you invented; a trademark protects what you call it.
The core distinction
A patent is about function and innovation. It protects something new you built or discovered — a mechanism, a process, a compound, or (with a design patent) the ornamental appearance of a product. It is a time-limited monopoly granted in exchange for publicly disclosing how the invention works.
A trademark is about identity and trust. It protects the symbols that tell consumers who made something — a brand name, a logo, a slogan, a distinctive packaging look. Its purpose is not to reward innovation but to prevent confusion: so that when you buy a product bearing a brand, you get what you expect.
Why most products need both
Patents and trademarks are complements, not alternatives. A new physical product typically warrants a patent on its functional innovation (and possibly a design patent on its look) AND a trademark on its brand name and logo.
The timing matters too. The patent gives you a head start — a window of exclusivity while competitors cannot copy the invention. By the time the patent expires and the invention becomes free to copy, a strong trademark can carry the brand forward indefinitely. This is the classic life cycle: patents protect the early innovation; trademarks protect the lasting brand. The Coca-Cola bottle began with a design patent and lives on as protected trade dress and trademark long after the patent expired.
Common confusions
"I trademarked my invention." You cannot trademark an invention — only a brand identifier. To protect the invention itself, you need a patent. People often say "trademark" when they mean "patent," and the two send you to entirely different processes.
"My trademark stops others from making the product." It does not. A trademark only stops others from using a confusingly similar brand. A competitor can make an identical product under a different brand name without infringing your trademark — only a patent could stop the product itself.
"My patent protects my brand name." It does not. A patent says nothing about your name or logo. Once the patent expires, competitors can make the product; only your trademark protects what you call it.