Comment by huurtehoog

> Failing to police the use of trademark is sufficient grounds to lose the trademark, which is why companies tend to be overly aggressive in suing people for violating the trademark.

Not quite. There is no litigation requirement to renew a trademark registration. Trademarks are in fact the only type of intellectual property that can be preserved in perpetuity.

Litigation is an attempt to prevent genericide, and might fail at that.

Trademarks can be preserved even in the absence of litigation. Cancellation cases in US law typically require evidence of abandonment and lack of evidence for intended re-uptake. Litigation is not necessary to refute abandonment.