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Invalidity/Validity Search
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Reassert the Strength of Your Patent’s Claims

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An invalidity/validity search is an exhaustive, date-limited prior art search conducted against the claims of a patent to verify its validity or render it invalid by uncovering relevant art filed before its earliest priority date.

This type of search is conducted in order to challenge a patent using pre- or post-grant opposition options, or as a defence when facing a patent infringement lawsuit. An invalidity search also helps establish the strengths and weaknesses of a patent’s claims for fair licensing and acquisition negotiations.

Our Process

During an invalidity/validity search, our experts go through the file history of the patent in question and conduct a prior art search that takes into consideration the arguments raised by the examiner and the applicant/attorney.

We take a close look at the specific claims in the patent that need to be verified, consider the patent’s priority date, and target the prior art that is not listed on the face of the patent. Based on the results of our prior art search, and with the help of our search experts’ knowledge of patent laws, we aim to call into question the novelty or nonobviousness of the patent claim.

Common grounds for invalidating a patent include: prior public knowledge or use, or sale or publication of the product, process, or service before the priority date of the patent in question. Our team leaves no stone unturned and conducts thorough searches directed at each of these possible grounds.Once the search is concluded, we then provide an insightful, customer-friendly report that clearly maps out the prior art against the asserted claims. Our invalidity/validity search reports have been instrumental in overturning allegations of patent infringement and in helping clients take a stronger, better-informed stance in patent litigations or negotiations.

Contact Us

For over 25 years, the experts at Legal Advantage LLC have been providing legal support services for clients across the US and Canada. To learn more about patent invalidity/validity searches and the other IP support services we offer, fill out our online contact form or call (301) 637-6180 today.

Our analysts and managers are diligent and methodical when determining which concepts are vital to your search needs.

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Why Choose Us?
Highly qualified and well informed team consisting of PhDs, Masters, Engineers, former patent examiners, and patent agents with over 500 years of collective work experience.
Top IP support services company serving a majority of the Am Law 500 firms and Fortune 500 companies.
Easy-to-follow project reports with designs based on our experience and our clients’ common preferences. Our reports show the exact portions of the prior art that is relevant—no junk data, thus enabling you to make decisions quickly and with a high level of accuracy. Each report lists the concepts, keywords, and classification codes searched.
Multi-tier quality check at each stage—from the kickoff meeting through the project’s progress to the final wrap-up—ensures unparalleled accuracy in strategy, relevancy, and reporting.
In many occasions, our analysts not only search prior arts that represent the requirement, but also those that resemble it. We perform a fine assessment of the technology in question as well as of other prior arts that may have similar functionality.
Your searches and analyses are conducted by our most qualified analysts in the given sub-technology—we don’t just assign searches to the earliest available analyst in the broad-technology domain.
Access to the world’s leading 250+ patent and non-patent literature databases.
Our search experts are well acquainted with combination strategies that produce relevant results—apt selection and combination of patent classes, subclasses, and keywords.
We tailor the report to the way you like to see it. Our clients’ preferences often vary from a full report to just the list of identified references on a single page.
Fast turnaround. Our team is trained to delve deep with speed—no haste.
We search the art by amalgamating science, law, and logic. Our analysts and managers are diligent and methodical when determining which concepts are vital and which are trivial in the search request.
Our search and analysis experts engage with you in critical instances that call for your particular attention and expertise. Should our internal discussions on a certain concept not bring about a unanimous conclusion, we consult you at the soonest possible time.

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