Stop Unauthorized Sellers from Damaging Your Brand
Sigil finds and removes unauthorized sellers across Amazon and Walmart,
so you don’t have to.
Trusted by leading brands.
Unauthorized Seller Enforcement Is Exhausting
No clear focus
One-off enforcement
Manual, reactive work
Continuous Enforcement, Fully Managed
How Sigil Handles Enforcement
01. Polite Outreach to Sellers
Friendly notices that resolve many cases without escalation.
02. Targeted Investigations
We gather evidence, ask probing questions, and confirm material differences to support your claims.
03. Trademark Complaints
We submit structured, high-quality complaints using material-difference arguments that marketplaces recognize.
04. Complaint Escalation
Our team escalates cases internally when needed to ensure reliable takedowns.
05. Cease-and-Desist
Formal C&D letters for persistent offenders to lock down compliance.
Minimal setup. Ongoing coverage.
No monthly limits to manage. No chasing sellers. Just consistent coverage.
Expert-led enforcement aligned to your brand.
High-impact unauthorized sellers prioritized for removal.
Clear updates on enforcement progress.
Full Visibility Into Enforcement Activity and Outcomes
Real Results From Brands Like Yours
Case Studies
3,052
Total Sellers Removed
13.4%
Avg. Price Stabilization Achieved
55,000+
Number of Offers Protected
How a Premium Pet Food Brand Stabilized Pricing & Grew Revenue on Amazon by $45,000 monthly
Read case study →
From 27% to 100%: How a Premium Tool Brand Reclaimed the Amazon Buy Box
Read case study →
Combating Unauthorized 3P Sellers: Tru Earth’s Approach to Add $50,000 Monthly in Amazon Sales
Read case study →What Our Customers Say
“Working with Sigil is a pleasure—courteous, detailed, and genuinely focused on helping customers. They prioritize meaningful solutions over unnecessary services and continuously improve their offerings. The teamwork and commitment to making a real difference are truly appreciated.”
Candice Nicole
Founder & President of HUmineral
“Sigil was the perfect addition… a unique solution and easy to use tool for a frustrating problem.”
Alex Maske
Director of Weleda NA
“I cannot recommend Sigil enough to anyone seeking a reliable and effective solution to eliminate unwanted sellers on Amazon. Thanks to their invaluable assistance, we can focus on what we do best, confident that our brand is protected.”
John Cramer, CEO
CEO of Raw Elements
“Sigil is super quick and affordable. We’ve already seen major improvement in our eCommerce sales, especially on Amazon, within our first 2 weeks! We also love the ease of the platform and how user friendly it is.”
Ginny Hampton
Performance Marketing Manager of Tru Earth
“Sigil is amazing! They are truly a customer-focused company and have saved me thousands of dollars a month”
Joseph Blanch
CEO of GöBe Kids