To be considered an invention, it must be

• A. New
• B. New and industrially applicable
• C. New, industrially applicable and involves inventive step
• D. Not novel

Answer: (C)

The main idea is that patentability rests on three requirements: novelty, industrial applicability, and an inventive step. Novelty means the invention isn’t already disclosed by prior art. Industrial applicability means it can be made or used in industry, providing a practical, workable application. An inventive step (non-obviousness) means it isn’t obvious to a person skilled in the field in light of existing knowledge.

Only when something meets all three does it qualify as a patentable invention. If it isn’t novel, it fails from the start. If it’s novel and useful but obvious, it fails on inventive step. If it’s novel and useful but cannot be practically implemented or used in industry, it fails on industrial applicability. The option that includes all three criteria—new, industrially applicable, and involves inventive step—best matches the standard for patentability.