Whether preparing for investment or bringing a new product to market, knowing your intellectual property position can determine whether you secure a competitive advantage or encounter costly barriers to entry. A critical, and often underestimated, component of that position is prior art.
Prior art refers to any evidence that an invention is already publicly known. If a solution has been disclosed anywhere in the world, in any language, before the effective filing date of a patent application, it may contravene the requirement for novelty and so preclude patent protection.
For organisations investing in research and development, understanding and managing prior art is not simply a legal exercise it is a strategic necessity.
The Full Scope of Prior Art
A common misconception is that prior art consists solely of existing patents. In practice, the “state of the art” encompasses a far broader range of disclosures, including but not limited to:
- Academic and technical literature: Journal articles, theses, and conference proceedings (including abstracts, posters and presentations)
- Digital disclosures: Open-source repositories, technical blogs, white papers, and online demonstrations
- Commercial activity: Product brochures, trade show presentations, and prototypes disclosed without appropriate confidentiality protections
- Emerging AI-related risks: The use of generative AI tools in R&D introduces additional considerations. Inputting proprietary information into publicly accessible systems may, depending on platform terms and jurisdiction, constitute disclosure and potentially create prior art against your own invention
This expanded landscape significantly increases the risk of inadvertent disclosure and reinforces the need for a structured IP strategy.
Novelty and Inventive Step
In the UK and Europe, patentability is assessed against two core criteria, both of which are measured against prior art:
1. Novelty
The invention must be new. If any prior art document contains an enabling disclosure of all the features of the claimed invention, the application will be deemed to lack novelty.
2. Inventive Step
Even where an invention is technically new, it must not be obvious to a hypothetical “person skilled in the art.” This legal construct represents a practitioner with ordinary knowledge in the relevant field.
An invention may be refused if it is considered an obvious development of existing knowledge. For example, where known technologies are combined in a predictable way without producing an unexpected technical effect.
This assessment is often nuanced and fact-specific, underscoring the importance of professional analysis when drafting and prosecuting patent applications.
Knowing what prior art is out there allows a comprehensive patentability assessment and enables the distinguishing features achieving the proprietary innovation to be explicitly detailed when drafting the patent application.
Key Concepts for Commercial Decision-Makers
A clear understanding of IP terminology is essential when evaluating risk, investment, and market strategy:
- Freedom to Operate (FTO): Patent protection does not guarantee the right to commercialise a product. An FTO analysis assesses whether a product or process infringes existing third-party rights.
- Grace Periods: Unlike some jurisdictions, the UK and Europe do not provide a grace period for disclosures made prior to filing. Public disclosure, even by the inventor, can irreversibly prevent patent protection.
- Trade Marks: While distinct from patents, trade marks require similar strategic consideration. Clearance searches for earlier rights are essential to avoid infringement and mitigate the risk of passing off.
Prior Art as a Due Diligence Tool
From an investor or acquirer’s perspective, a robust prior art analysis is a key indicator of organisational maturity. It demonstrates:
- Awareness of the competitive landscape
- Reduced legal and commercial risk
- A clearly defined boundary between existing technology and proprietary innovation
Organisations that can articulate where the state-of-the-art ends and their innovation begins are better positioned to secure funding, defend their market position, and maximise the value of their IP assets.
Conclusion: Start Your Journey to Protection
Addressing prior art proactively is fundamental to building a defensible and commercially valuable intellectual property portfolio. It does not just protect innovation; it defines its scope and viability in the marketplace.
At Secerna, our patent search specialists collaborate with innovators to provide commercially-driven guidance aligned with your business aims. We turn your ideas into legally enforceable commercial assets by ensuring your foundation is secure from day one.