特許

1. Origins, structure, and basic meaning

• Structure: 特許, read とっきょ, combines special 特 with permission 許 as a legal term for an invention right.
• Basic usage: It denotes the exclusive right or system granted for an invention for a period, as in 装置の特許を出願する.

2. Common pitfalls and similar expressions

• Scope and context
  • 出願 is the application stage and does not mean the patent has actually been 取得; distinguish the status.