You are sitting in a chair. Your left arm is cybernetic. It is bonded to your body with Cortex Dynamics SNT-7, Lot #4471-C. The question is: who owns the 180 square centimeters of living tissue that connects your arm to your shoulder?

You might think you do. You would be wrong.

Cortex Dynamics holds Patent CD-2091-4477 on the cellular architecture of Synthetic Neurovascular Tissue. This patent covers not just the manufacturing process but the tissue itself — the specific genetic sequences that encode the cell behaviors, the growth factor cocktails that guide differentiation, and the structural patterns that form during microgravity cultivation.

When you receive an SNT-bonded implant, you sign a licensing agreement. Page 4, Section 7.2, in language that would require a law degree to parse, you agree that the SNT material remains the intellectual property of Cortex Dynamics. You are granted a 'personal, non-transferable, revocable license' to the tissue that grows inside your body.

This is not hypothetical. In 2221, Cortex Dynamics sent cease-and-desist letters to 14 independent researchers who had extracted and studied SNT tissue from cadavers. The company argued that the SNT remained proprietary material even after the patient's death. The researchers were ordered to destroy their samples. They complied. The precedent stands.

The Body Extension Doctrine protects you from having your implant repossessed. It does not protect you from the legal reality that the tissue bonding the implant to your body is licensed, not owned. You cannot study it. You cannot modify it. You cannot authorize anyone else to study or modify it. The living tissue inside your body is someone else's intellectual property.

This is the logical endpoint of the commodification of the body: a corporation holds a patent on a piece of you.