| 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 |