PTAB
| Acronym | Definition |
|---|---|
| PTAB | Patent Trial and Appeal Board (USPTO) |
| PTAB | Property Tax Appeals Board (Illinois) |
| PTAB | Processing Tomato Advisory Board (California) |
| PTAB | Project Technical Advisory Board |
| PTAB | Polskie Towarzystwo Analizy Behawioralnej (Polish: Polish Society of Behavioral Analysis; Gdansk, Poland) |
| PTAB | Planning and Technological Assistance Branch |