The Asterisk Is Fading: What Narrower PTAB Review Means for Your Issued Patent

For a decade, an issued patent came with an asterisk: it could be pulled into administrative review and invalidated before it ever reached a courtroom. In 2026, that asterisk is fading. Here is the shift and what to do with it.

Institution is the gate, and it is closing. After the USPTO expanded discretionary denials and consolidated institution under the Director, the rate fell from roughly two-thirds of petitions to a five-year low of 50% for FY2025, with rates falling to around 37% in May 2026. For a founder holding an issued patent, the administrative kill switch just got harder to reach.

There is a pattern inside those numbers worth knowing. A primary factor in whether a challenge even gets instituted now is the age of the patent. Under the Office's settled expectations approach, a patent in force more than about six years is denied review in the large majority of cases, while one only a year or two old usually goes straight to the merits. If you are holding an older issued patent, the shield is already forming around it.

Know the tools.

The tools have not changed. The odds of using them have. Post-Grant Review is broad, reaching eligibility and disclosure, but it runs only in the first nine months. Inter Partes Review is narrower, limited to prior-art patents and printed publications. Get served with an infringement complaint and you have one year to file an IPR before the option closes. The two windows don't overlap. An IPR can only be initiated 9 months after grant , or when an earlier-filed PGR ends.

Adjust your offense.

Clearing a blocking patent through an IPR is a weaker bet now, because you may never get instituted. Sophisticated challengers are building their district-court and design-around paths in parallel.

Win it in prosecution.

That is leverage the next Director cannot rescind. Layer your claims so a specific dependent survives when the broad one falls. A claim the Board never cancels stays issued, with its full presumption of validity intact. It walks into court and must be beaten again under the higher clear-and-convincing standard. You did not build one patent. You built a claim the other side has to defeat twice.

The founders who win are not reacting to petitions. They build portfolios that are hard to institute against and expensive to invalidate, before anyone tries.