Invalidity & Litigation Search
Prior Art Searches for IPR and PGR Petitions
An IPR prior art search looks for patents and printed publications that can support a petition for inter partes review (IPR) at…
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Invalidity & Litigation Search
Prior Art Search Blogs
Patentability Search: Scope, Cost and Report Contents
Patentability search cost depends on how many features of the invention are searched, which sources and languages are covered and how much…
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Invalidity & Litigation Search
Finding the Killer Reference: Non-Patent Literature as Prior Art for Invalidity
Prior art for invalidity is any earlier disclosure that shows the claims of a granted patent were not new or were obvious.…
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Landscapes & Technology Insights
Patent Landscape Analysis: Scope, Method and Deliverables
A patent landscape analysis is a study of the patent documents in a technology field, organised to show who is filing, where,…
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Life Sciences Searches
Biological Sequence Search: Databases, Scoring and What You Receive
A biological sequence search compares a nucleotide or amino acid sequence with the sequences disclosed in patents, published applications and scientific literature.…
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Invalidity & Litigation Search
How to Build an Invalidity Claim Chart, with a Worked Example
An invalidity claim chart is a table that sets each limitation of a patent claim beside the passage of a prior art…
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Prosecution Support
The USPTO IDS Size Fee in 2026, Explained with Worked Examples
The IDS size fee is a United States Patent and Trademark Office (USPTO) fee based on how many items an application cites…
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Prior Art Search Blogs
Prior Art Search: How Professionals Do It (and What You Receive)
A prior art search is a structured search of patents and other publications for earlier disclosures that bear on whether an invention…
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Invalidity & Litigation Search
Invalidity Search vs Invalidity Contentions vs Rule 11 Claim Charts
Invalidity contentions are the formal disclosure in which the defendant in a US patent suit sets out why the asserted claims are…
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Prior Art Search Blogs
Patent Invalidity Search: Process, Timeline and Cost
What a patent invalidity search is, when it is needed, how it is carried out, how long it takes and what it…
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