Prior art is everything already known that bears on whether your invention is new and inventive. Searching it is the patent equivalent of clearance: you establish whether an invention is genuinely novel before investing in a full application. Finding the closest prior art early is what prevents an expensive refusal during prosecution, or an invalidation later.
Prior art is not limited to earlier patents. It includes published patent applications, granted patents, and non-patent literature such as scientific papers, conference proceedings and technical standards. A thorough search combines several strategies in parallel: classification-based searching, keyword and concept searching, and following citation trails between related documents.
The value is not in a pile of documents but in the analysis: identifying the most relevant prior art, assessing how it bears on novelty and inventive step, and advising how claims should be drafted to achieve the broadest defensible scope given what already exists. Each significant reference is recorded and traceable so a patent attorney can verify and build on it.
Prior-art searching is part of our patent research and patent services, delivered through our patent intelligence technology and continued, once you are filing, through patent watch. It pairs with freedom-to-operate analysis and the wider patent research background.
No. It includes any publicly available disclosure, including scientific and technical literature, that predates your filing and is relevant to novelty or inventive step.
Because finding the closest prior art early lets you decide whether to file at all, and shapes the claims so they stand the best chance through examination and any later challenge.
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