The constraint is the fairing. On January 18, 2022, Tethers Unlimited was granted US11228115B2, “Methods and apparatus for manufacture and in-space assembly of antennas,” classified in H01Q 21/0087 with a B64G 1/66 in-space tie. The claim covers building antennas after launch, in orbit.
Antenna performance scales with aperture: bigger antennas mean more gain, more capacity, sharper beams. But every spacecraft is constrained by the launch fairing — a fixed volume that caps how large a structure can fly fully assembled. The industry's workaround has been folding and deploying, which adds mechanical risk and still limits ultimate size.
In-space assembly attacks the constraint at its root. If an antenna can be built or assembled in orbit from compact components, its final size is no longer bounded by what fits in a fairing — only by what the components can be assembled into. That decouples aperture from launch volume, which is the variable that otherwise forces a costly trade between capability and what a rocket can lift.
The disciplined caveat: in-space assembly is operationally complex and largely unproven at commercial scale, and a patent describes the method, not a fielded capability. The launch-cost savings are theoretical until something is actually assembled in orbit at a cost that beats launching it whole.
But the framing is the value. Large-aperture economics are gated by the fairing, and a patent on building antennas in orbit is a patent on escaping that gate — the kind of capability that resets what a high-value comms or sensing mission costs to field.