ARTICLE
7 November 2025

Patent Searching — Strategies And Best Practices

II
Irwin IP

Contributor

Irwin IP, a part of Miller Johnson, focuses exclusively on intellectual property and technology-related litigation. We defend clients in high-stakes, bet-the-company matters and help them enforce and monetize their intellectual property. Our expertise extends to handling Patent Office validity challenges (reexaminations, IPRs, and PGRs), providing intellectual property counseling, and supporting merger and acquisition due diligence.

Founded in 2014 by Barry Irwin, a seasoned attorney with over 24 years of experience in high-stakes intellectual property litigation, Irwin IP is built on a foundation of excellence. Barry, a decade-long equity partner at one of the world's most prestigious law firms and a Fellow of the invitation-only Litigation Counsel of America trial lawyer honorary society, has assembled a team of exceptional attorneys. Three of Barry’s former "big-law" partners have joined Irwin IP, bringing decades of high-stakes litigation experience to create a powerhouse IP litigation boutique.

This presentation and its materials aim to provide general public information and entertainment pertaining to American intellectual property law.
United States Intellectual Property
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*Disclaimer*

This presentation and its materials aim to provide general public information and entertainment pertaining to American intellectual property law. They reflect the authors' personal views and do not serve as specific legal advice, as legal solutions can vary by case. The content has been simplified for clarity, so it may not be applicable to all situations. Neither authors nor Irwin IP LLP assumes responsibility for the opinions expressed or for any inaccuracies. Additionally, the materials do not establish an attorney-client relationship.

Patent Basics

Patents: Overview and Examples

Type of IP Definitions Examples Term Cost
Patent (Utility) New and useful ideas and improvements thereof Household items, semiconductors, medical devices 20 years from date of filing of patent application $$$$
Patent (Design) New ornamental (nonfunctional) designs Shape of furniture, fabric patterns, mobile phone interface 15 years from date of grant $$$

Patents: Definitions

NEW (NOVEL) NOT OBVIOUS (INVOLVES AN INVENTIVE STEP) USEFUL (UTILITY)
Has anyone else in the "prior art" already done exactly what you invented? Has someone else in the "prior art" done something close to what you invented, and would it be obvious to modify what they did to arrive at your invention? Very low threshold. Essentially, if your invention can do anything more than serve as a paperweight, it probably will meet the utility requirement.

Patents: Common Mistakes

  • Not conducting a prior art search
  • Inadequate patent description
  • Poorly drafted patent claims (to be or not to be [your own lexicographer])
  • Disclosing the invention, method, or process to the public too early
  • Waiting too late to file the patent application before a competitor
  • Not renewing the patent in time and ignoring maintenance fees

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What does a patent look like?

Claims= the fence around the around the property (scope of the legal protection)

Specifications = the blueprint explaining what's inside and how it works

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Patent Invalidity – Novel Anticipation/Obviousness

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Patent Infringement

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To view the full pdf, click here.

The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

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