US 5,776,527 · Granted 1998-07-07

The Prefilled Coffee Pod That Made Single Servings Standard

Imagine a tiny paper packet stuffed with ground coffee, with a rigid frame around the edges so it doesn't fall apart when you shove it into an espresso machine. This patent locks down that exact design—the combination of filter paper, ground coffee, and a sturdy border that holds everything together.

Curated and verified by the IsItPatented Editorial team

The plain-English version

What it protects

The claim covers a premeasured coffee package made from filter paper that holds ground coffee, with a rigid frame or border material surrounding the perimeter to give it structural strength. What's protected here is that specific combination: the filter-paper pouch design plus the reinforcing frame that prevents the packet from collapsing or leaking during brewing. Anyone manufacturing a similar prefilled coffee dosette with this frame-and-pouch structure would be infringing on the patent's claims.

Why it matters

This patent represents a key step in making espresso machines convenient for home use. By containing precisely measured coffee in a durable, single-serving packet, it eliminated the mess and guesswork of filling a portafilter by hand. The rigid frame was the engineering solution that made the whole idea work—without it, paper pouches would tear or deform inside the machine. This design helped transform espresso from a specialty-cafe drink into something everyday consumers could make at home.

Real-world use

Every time someone drops a prefilled espresso pod into their home machine, they're using technology built on this patent's design. The filter paper and reinforced edges keep the coffee intact during the high-pressure brewing process.

Original USPTO abstract

Packaging of ground coffee in the form of pastille, "dosette" or predosed bag (1) usable in espresso coffee machines, the pastille, the "dosette" or the predosed bag (1) being formed of filter-paper (3) which encloses the ground coffee (4). The ground coffee content (4) placed in the pastille or the like is partially or totally circumscribed at its periphery, by at least one piece (6) of a sufficiently rigid material acting as a frame, so that the pastille or the like (1) has a good mechanical behaviour. Application to the production of coffees.

Patent details

Publication number: US 5,776,527
Filing date: 1994-09-05
Grant date: 1998-07-07
Assignee: Compagnie Mediterraneene Des Cafes S.A.
Inventor(s): BLANC; JEAN PIERRE
CPC class: B65D85/8046

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