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Legal Definitions - PAT. PEND

Simple Definition of PAT. PEND

PAT. PEND. is an abbreviation for "Patent Pending." This term indicates that an application for a patent has been filed with a patent office for an invention. It serves as a notice to the public that a patent may eventually be granted, but it does not mean the patent has been issued yet.

Definition of PAT. PEND

PAT. PEND is an abbreviation for PATENT PENDING.

This phrase signifies that an application for a patent has been officially filed with a government patent office (such as the U.S. Patent and Trademark Office), but the patent has not yet been granted or rejected. It serves as a public notice that the inventor or company believes their invention is novel and non-obvious, and they are actively seeking legal protection for it. While "patent pending" does not confer the full legal rights of an issued patent, it can deter others from copying the invention and may allow the patent holder to claim damages for infringement that occurred after the patent was ultimately granted.

  • Example 1: Consumer Product Launch

    Imagine a startup company that has developed a revolutionary new smart thermostat capable of learning a household's energy consumption patterns with unprecedented accuracy. Before launching the product to the market, they file a comprehensive patent application covering the unique algorithms and hardware design. They then prominently display "PAT. PEND." on the product packaging, the device itself, and all marketing materials.

    How it illustrates the term: By marking their product with "PAT. PEND.," the company is publicly announcing that they have applied for patent protection for their innovative thermostat. This warns potential competitors that if they attempt to copy the design or technology, they could face legal action for infringement once the patent is officially granted, thereby protecting the startup's investment in research and development.

  • Example 2: Industrial Manufacturing Process

    An engineering firm invents a novel, environmentally friendly process for recycling plastic waste into high-strength building materials. They believe this process is unique and offers significant advantages over existing methods. After successfully testing the process, they submit a detailed patent application to protect their intellectual property.

    How it illustrates the term: The firm includes "PAT. PEND." in their technical specifications, licensing agreements, and presentations to potential industrial partners. This signals to other manufacturers and waste management companies that their innovative recycling method is currently under review for patent protection. It encourages others to respect their intellectual property and consider licensing the technology rather than attempting to replicate it without permission, knowing that a patent could soon protect it.

  • Example 3: Software Feature Integration

    A software development company creates a unique user interface (UI) navigation system for mobile applications that allows users to access complex features with a single, intuitive gesture. They believe this UI design is a significant improvement over current standards and file a patent application for its specific implementation.

    How it illustrates the term: In their developer documentation, end-user license agreements, and promotional materials for their new software development kit (SDK), they refer to this feature as "PAT. PEND." This informs other app developers and competing software companies that the company has submitted a patent application for its proprietary UI navigation system. The "PAT. PEND." status provides a warning that attempting to directly copy or implement this specific gesture-based navigation could lead to legal consequences once the patent is issued, thereby safeguarding their innovation.

Last updated: November 2025 · Part of LSD.Law's Legal Dictionary · Trusted by law students since 2018