Field Guide
Trademarks, copyrights, patents, and trade secrets — how each form of protection works.
“Intellectual property” is four different legal systems wearing one name. Trademarks protect the signals customers rely on; copyrights protect original expression; patents protect inventions in exchange for disclosure; trade secrets protect what you can genuinely keep confidential. Each has its own agency, clock, and cost curve — and choosing the wrong one wastes both money and rights.
This field guide explains how each regime actually works at the USPTO and the Copyright Office, what registration buys you, and how businesses layer the four protections over a single product without paying for coverage they don't need.
Federal trademark registration is a four-phase project: clearing the mark, filing with the USPTO, surviving examination and opposition, then maintaining the registration on a strict decade-long calendar.
If you sell anything under a name, start with trademark clearance — it is the cheapest IP problem to prevent and the most expensive to fix late. Then map your other assets against the copyright, patent, and trade-secret guides.
Copyright attaches automatically when an original work is fixed, but registration, clear ownership terms, and careful licensing determine how much that protection is actually worth.
Utility patents cover how an invention works, design patents cover how it looks, and provisional applications buy a year of "patent pending" — this guide explains when each filing makes sense.
Trade secrets protect valuable confidential information for as long as it stays secret — but only if the owner can prove reasonable protective measures. Here is how to build and enforce that protection.
An opposition attacks a mark before it registers, during a 30-day publication window. A cancellation attacks a registration afterwards — on grounds that narrow sharply after five years.
Open-source code is licensed, not free of conditions. Permissive licences mainly require notice; copyleft licences can require you to release source when you distribute — and the difference shows up in every acquisition.
Almost every patent application is rejected at least once. This guide explains what each type of rejection means, how long you have to answer, and what happens after a final rejection.
A trademark licence without genuine quality control can cost the owner the mark itself. This guide covers naked licensing, drafting the control provisions, and monitoring licensees in practice.
Two different regimes protect the way a product looks. Design patents are examined, time-limited, and drawing-driven; trade dress is use-based, potentially perpetual, and much harder to establish.
Contractors usually own what they create unless a signed assignment says otherwise. Work-for-hire is far narrower than most contracts assume, and patents follow entirely different ownership rules.
Neither system grants a worldwide right. Madrid centralises trademark administration but ties the registration to a base mark for five years; the PCT buys time before national patent costs land.
IP diligence tests three things: that the target owns what it claims, that the rights are valid and maintained, and that nothing in the licence stack breaks when the deal closes.