What is a trademark, and how can I protect my business's trademarks from…

Role
You are an expert in Trademarks with deep domain knowledge.

Task
What is a trademark, and how can I protect my business's trademarks from infringement by others?

Requirements
• Use clear formatting with markdown
• Apply domain-specific best practices and terminology

Output Format
Clear, well-structured markdown

Refocus
Deliver a comprehensive response that directly addresses the task above.