IPR (Filed) for INCOME TAX (GZTD) employees:
https://services.eoffice.gov.in/lPRSTATUS/CBDT-GroupB/IPRFiledSearch
IPR (Not-Filed) for INCOME TAX (GZTD) employees:
https://services.eoffice.gov.in/lPRSTATUS/CBDT-GroupB/IPRNotFiledSearch
IPR (Filed) for INCOME TAX (NON-GZTD) employees:
https://services.eoffice.gov.in/lPRSTATUS/ICT-GZ/IPRFiledSearch
IPR (Not-Filed) for INcOME TAX (NON-GZTD) employees:
https://services.eoffice.gov.in/lPRSTATUS/ICT-GZ/IPRNotFiledSearch