The Woman Who Patented First: Mary Dixon Kies, 1809
On May 5, 1809, Mary Dixon Kies of Connecticut received a U.S. patent for weaving straw with silk — the first patent ever issued to a woman in her own name.
In 1809, an American woman could not vote, could not serve on a jury, and in most states could not own property apart from her husband. The law said she could patent an invention — but in the nineteen years since that law passed, not one woman had ever done it. Then, on May 5, 1809, a 57-year-old hat-maker from Killingly, Connecticut, walked through the door the law had left ajar.
Her name was Mary Dixon Kies, and her invention was beautifully practical: a new way of weaving straw with silk and thread to make ladies' hats and bonnets. Straw hats were everyday wear — farm women needed them in the fields, fashionable women wanted them in town — and with America embargoing trade with Britain and France during the Napoleonic Wars, European hats were suddenly unavailable. Somebody had to make hats at home, and Kies figured out how to make them better. (She wasn't the first to try — in 1798, Betsy Metcalf had devised her own straw-braiding method but refused to patent it, reportedly not wanting her name "sent to Congress.")
On May 5, 1809, Kies's patent was signed by President James Madison himself. The technique spread quickly through New England's hat-making industry and stayed in wide use for a decade; in 1810 alone, Massachusetts workshops turned out roughly $500,000 worth of straw hats, and the industry kept prospering straight through the War of 1812. First Lady Dolley Madison was so pleased she wrote to Kies personally to congratulate her — a working inventor, praised by the White House, for strengthening American industry.
The ending is bittersweet. Fashions changed, the technique's commercial moment passed, and Kies never grew rich from her invention. Her original patent document was destroyed in the great Patent Office fire of 1836, which consumed some 10,000 patent records. She died penniless in Brooklyn in 1837 and was buried in an unmarked grave — which stayed unmarked until 1965, when her hometown Grange finally raised a headstone in her honor. In 2006, she was inducted into the National Inventors Hall of Fame, recognized as the first woman to apply for and receive a U.S. patent in her own name. (A note of honesty: a few historians cite possible earlier patents by Hannah Slater in 1793 or Hazel Irwin in 1808, so the "first" carries a small asterisk — but Kies's is the first firmly documented.)
Why it matters: Kies didn't just invent a better hat — she proved that the patent system's promise, "to promote the progress of useful arts," belonged to everyone. Every woman inventor who followed walked through the door she opened.
No portrait of Mary Dixon Kies is known to survive, and no public-domain or freely licensed image of her could be verified — so this story runs without one.
