# Mark Haines — Patents explained on PatentBrief

Mark Haines has 1 landmark patent explained in plain English on PatentBrief.

- [How American Express Tracks Your Spending Habits Across Different Stores](https://patentbrief.org/patent/us/7672870/amazon-prime) — granted 2010
  A system that links store-specific product codes to universal manufacturer codes to help consumers track their spending and stay within personal budgets.

**Full profile:** https://patentbrief.org/inventor/mark-haines

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_Source: PatentBrief — https://patentbrief.org. Plain-English explanations of US patents._