priorpatents.com

What It Is

Prior Patent Search is an LLM-assisted prior art search and technical claim mapping service. Its goal is not to replace attorneys or patent agents, but to generate reviewable technical mapping drafts for U.S. patent invalidity, IPR/EPR support teams. It focuses on mapping independent claim elements against candidate references one by one, producing disclosure matrices, claim-chart-style writeups, gap tables, and the necessary coverage views.

Core Capabilities

The website states that it uses embeddings and frontier LLMs. Embeddings convert patent text into a semantic “meaning map,” helping teams locate relevant passages faster across large volumes of prior art. Frontier LLMs are used for long-document comparison, structured outputs, and stable table formatting. Its main value lies in reducing manual passage hunting, table construction, and first-draft organization, rather than automatically completing legal arguments. The page explicitly says it does not draft motivation-to-combine, KSR-style narratives, or analogous-art arguments.

Pricing and Delivery

The website does not publish pricing, plans, free trials, or payment methods; it only provides an inquiry channel. The process includes intake, a technical mapping pass, and a review package. Specific timelines and delivery formats are agreed in writing after the requirements are confirmed. Before procurement, buyers should therefore further discuss scope, samples, confidentiality terms, and quotations.

Pros and Cons

Its strength is its restrained positioning: it clearly treats model outputs as draft material and flags uncertain technical matches for human review. It also focuses on patent litigation and IPR/EPR scenarios, making it suitable for teams that need to quickly build shared review materials. The limitations are also clear: it does not disclose the specific models used, database coverage, quality evaluation methods, privacy/security practices, or policies for handling client materials. It also does not provide legal opinions, claim construction, or outcome predictions.

Best Fit and Access from China

It is better suited to U.S. patent litigators, registered patent agents, IPR/EPR support teams, second-line technical analysts, and expert meeting preparation scenarios. It is not suitable as a general-purpose FTO, portfolio monitoring, or patent filing service. The website does not provide information about access from China, so network connectivity and cross-border payment support need to be tested in practice. If stable use is not possible, alternatives may include local patent databases, law firm search teams, or patent analytics tools with Chinese-language support.