How to Build a Case Against Unauthorized Sellers

2. Conduct and Document Test Buys

• Purchase your product from the unauthorized seller directly through Amazon.
• Keep the packaging, product, and all documentation (invoices, return labels, shipping info).
• Take photos or video of the unboxing and the product to show authenticity, quality, and any differences from authorized versions.
• Track serial numbers or lot numbers found on the product or packaging during your test buy.

This is one of the most effective ways to identify supply leaks and connect sellers to upstream sources.

3. Gather Evidence of Source and Authenticity

• If the product is different, missing components, expired, or not as described, document everything.
• Request that the seller provide invoices or proof of purchase.
• Record any responses they give, especially if they reveal sourcing information.

Many unauthorized sellers rely on grey market sourcing—see where sellers get grey market products and whether grey market is legal.

4. Monitor MAP and IP Violations

• Track ongoing MAP violations and pricing history.
• Document intellectual property misuse such as logos, images, or branded content.

Automated pricing strategies are often involved—see how grey market sellers use repricing.

5. Trace the Source of Product Leaks

• Audit your distribution, retailer, and wholesale accounts.
• Look for patterns such as order spikes or mismatched territories.
• Match serial or lot data back to original shipments.

This is critical for stopping the problem at the root, not just removing sellers.

6. Keep All Correspondence

• Save all emails, messages, and cease & desist communications.
• Keep legal responses or escalations for documentation.

For structured outreach, review sending cease and desist letters.

7. Avoid Common Pitfalls

• Never file false trademark complaints or make unsupported accusations.
• Do not claim counterfeit without proof.
• Consult legal counsel when unsure.

Amazon does not always act quickly—see why Amazon doesn’t remove sellers.

8. Graduated Enforcement and Escalation

• Start with friendly outreach.
• Escalate to formal cease & desist.
• Proceed to Amazon or legal action if needed.

In some cases, brands escalate further—see legal action against resellers.

9. Leverage Brand Registry and Enforcement Tools

• Enroll in Amazon Brand Registry: Amazon Brand Registry
• Use “Report a Violation” tools with your documented evidence.

10. Consult Legal Counsel When Needed

• Work with an attorney for complex IP or contract cases.
• Especially important for high-value or repeat violations.

Final Thought

Building a case against unauthorized sellers is about evidence, patience, and discipline—not just complaints.

Brands that document thoroughly, investigate supply chains, and act strategically are best positioned to remove violators and protect their marketplace presence.

Need expert help building your case or investigating sellers?

Contact Brand Alignment