Patent Glossary
Plain-English definitions for patent and intellectual property terms. Each entry includes a short definition, detailed explanation, and links to related concepts.
Patent Fundamentals
Patent
A government-granted right that gives an inventor exclusive control over the making, using, and selling of an invention for a limited period.
Patent Claims
The numbered statements at the end of a patent that legally define the boundaries of the invention being protected.
Patent Term
The length of time a patent provides exclusive rights, typically 20 years from the filing date for utility patents.
Patent Expiration
The date when a patent's exclusive rights end and the invention enters the public domain.
Trademark vs. Patent
Two distinct forms of intellectual property: trademarks protect brand identifiers while patents protect inventions.
Patent Process
Patent Application
The formal document filed with a patent office requesting the grant of a patent on an invention.
Patent Prosecution
The process of negotiating with a patent office to obtain a granted patent from a pending application.
Prior Art
Any evidence that an invention was already known or publicly available before a patent application was filed.
Provisional Patent Application
A simplified, lower-cost patent filing that establishes a priority date without starting the patent term clock.
Patent Examiner
A technical specialist at the patent office who reviews patent applications to determine whether they meet the legal requirements for grant.
Patent Cooperation Treaty (PCT)
An international agreement that provides a unified procedure for filing patent applications in multiple countries simultaneously.
Patent Types
Utility Patent
The most common type of patent, covering new and useful processes, machines, articles of manufacture, or compositions of matter.
Design Patent
A patent that protects the ornamental appearance of a functional item, rather than how it works.
Continuation Patent
A patent application that claims priority from an earlier (parent) application, allowing the inventor to pursue additional claims based on the same disclosure.
IP Strategy
Patent Portfolio
The complete collection of patents and pending patent applications owned by a person, company, or organization.
Patent Licensing
An agreement in which a patent holder grants another party permission to use the patented invention in exchange for compensation.
Trade Secret
Confidential business information that provides a competitive advantage, protected by secrecy rather than by patent registration.
Patent Thicket
A dense web of overlapping patents surrounding a product or technology, creating barriers to entry for competitors.
FRAND Patent
A patent on technology essential to an industry standard that must be licensed on fair, reasonable, and non-discriminatory terms.
Standard-Essential Patent (SEP)
A patent that covers technology required to implement an industry standard, making it impossible to comply with the standard without using the patent.
Patent Strength Score
PatentCliff's proprietary grading system that rates patent portfolios from A (strongest) to F (weakest) based on portfolio metrics.
Patent Landscape
A comprehensive analysis of all patents in a specific technology area, showing who owns what and where innovation is concentrated.
Pharmaceutical Patents
Patent Cliff
The sharp drop in revenue a company experiences when a blockbuster product loses patent protection and faces generic or copycat competition.
Hatch-Waxman Act
The 1984 U.S. law that created the modern framework for generic drug approval, balancing innovator patent rights with generic access.
Paragraph IV Certification
A legal assertion by a generic drug applicant that a listed patent is invalid or will not be infringed by the generic product.
Orange Book Listing
The FDA's official publication listing approved drugs, their associated patents, and regulatory exclusivity periods.
Patent Evergreening
The strategy of extending effective patent protection beyond the original patent term by filing additional patents on modifications to the original invention.
Patent Litigation
Patent Troll (Non-Practicing Entity)
A company that acquires patents not to manufacture products but to generate revenue by suing or threatening to sue alleged infringers.
Patent Infringement
The unauthorized making, using, selling, or importing of a patented invention within the jurisdiction where the patent is in force.
Inter Partes Review (IPR)
A proceeding before the USPTO Patent Trial and Appeal Board to challenge the validity of an existing patent based on prior art.