Proprietary Article Certificate (PAC)

A Proprietary Article Certificate is a formal document signed by a technically competent officer, typically at the level of a Senior Engineer or Director or above, certifying that the item being procured is a proprietary product manufactured or supplied by only one identified source, and that no equivalent substitute is available that would serve the purpose equally well. On the basis of a PAC, the procuring entity is entitled to conduct single-tender enquiry (also called single-source procurement or direct procurement) without publishing an open NIT. This is an exception to the fundamental principle of open competition, and it requires strict justification and approval from appropriate authority.

What is a PAC in government procurement?

The PAC mechanism is governed by GFR 2017 and the Manual for Procurement of Goods 2017. These rules recognise that certain situations genuinely do not allow open competition: a spare part for a specific installed machine that only the OEM can supply; a proprietary software system that is already deployed and whose maintenance must be done by the original developer; specialised scientific equipment with unique performance characteristics available from a single manufacturer worldwide. In such cases, forcing open competition would either result in non-compliant bids (because no competitor's product meets the specification) or no bids at all.

The PAC must contain: the complete description of the item, the technical justification for why no substitute is acceptable, the identified sole source and its authorisation letter (or documentation confirming it is the only source), and the signature of the technically competent officer with his or her designation and date. For PAC-based procurement above Rs 25 lakh, GFR 2017 and CVC guidelines require approval from a committee (not a single individual) to guard against misuse.

The CVC and CAG scrutinise PACs closely. Historical audit reports show that PACs have been misused, specifications written around a specific brand to justify PAC when equivalent alternatives exist. To pass scrutiny, the PAC must genuinely demonstrate that the specification is performance-based (not brand-based) and that the identified single source is the only entity worldwide that can meet that performance specification.

After PAC approval, procurement proceeds through single-tender enquiry, the identified vendor is asked for a quotation, a technical evaluation confirms conformance, and price negotiation is conducted to establish reasonableness. Price reasonableness is assessed against: historical prices, DPAP (Delhi Purchase Advisory Committee) advice, published price lists, or independent cost analysis.

Why it matters for bidders

For vendors who are the identified sole source in a PAC, the procurement is highly favourable, no competition, direct order, reasonable price negotiation. However, vendors must be prepared for CVC/CAG scrutiny of the PAC's validity. If an auditor later determines that the PAC was unjustified and that competing products existed, the vendor may be asked to return excess profit, and the procurement officer who signed the PAC faces personal accountability.

For companies trying to enter a market where an incumbent enjoys repeat PAC-based procurement, the strategic response is to demonstrate equivalence, preparing detailed technical comparison documents showing that their product meets the same performance criteria, and formally challenging the PAC's justification through the department's purchasing authority or through a CVC complaint.

PACs are also relevant for government ICT projects: software-as-a-service procurements where a specific platform (SAP, Salesforce, Oracle) is already deployed are sometimes procured via PAC for ongoing licensing and support. MEITY's guidelines on software procurement restrict PAC use but permit it where a government-wide rollout makes multi-vendor environments impractical.

Example

A government research laboratory has installed a specific make of high-vacuum electron microscope (manufacturer: Thermo Fisher Scientific, USA). After four years, the laboratory needs to procure additional sample preparation accessories, ion beam polishers and cryo-transfer stages, that are mechanically and electronically compatible only with the installed microscope's brand and model. The laboratory's Senior Scientific Officer issues a PAC certifying that: the accessories must interface with Thermo Fisher's FEI Helios-G4 model; no third-party equivalent is compatible without custom engineering that would void the instrument warranty; and only Thermo Fisher's authorised Indian distributor can supply original accessories. The PAC is approved by a committee including the Director. A single-tender enquiry is raised with the distributor, who quotes Rs 18 lakh; the price is negotiated down to Rs 15.5 lakh based on historical import price data.

Key rules / thresholds

• PAC must be signed by a technically competent officer, a non-technical administrative officer cannot sign a valid PAC.
• PAC-based procurement above Rs 25 lakh requires committee approval per CVC guidelines.
• Price negotiation is mandatory after PAC: a PAC does not justify accepting the first price quoted; reasonableness must be established.
• GFR 2017 Rule 173 governs single-tender enquiry, read this rule and Manual for Procurement of Goods 2017 Chapter 6 before invoking PAC.