Distinguishing commercial sources
A trademark distinguishes commercial source rather than describing every technical feature of a product. Words, letters, numbers and images can serve this function; some systems also recognize forms such as shapes, packaging or sounds.
This purpose differs from patents and copyright. Technology, original artwork and a source-identifying name on one product can raise separate rights questions rather than becoming one interchangeable form of protection.
Registration and licensed use
Registration is sought through national or regional offices. Protection in multiple jurisdictions may involve separate applications or procedures such as the Madrid System, while the territories concerned still need identification.
Registration generally supports exclusive use and legal certainty. The owner can use the sign or license another enterprise to use it, subject to the relevant arrangements.
References: [1]
Renewal and duration
Ten years is a common registration term, although terms vary. Renewal can extend a qualifying registration repeatedly, unlike simply applying the usual twenty-year invention-patent term.
Renewal, licensed use and ownership transfer are distinct matters. In a trademark’s history, first appearance, commercial use, filing and registration can also mark different events rather than a single interchangeable date.