Why does it matter whether documents get stamped before or after attorney review?

Two kinds of numbers with two jobs

The confusion usually comes from treating one number as if it had to do two jobs. During review, the team needs a stable way to refer to each document and page so that notes, coding decisions, and privilege calls can be tracked. At production, the other side needs a unique, sequential identifier on every page it receives. These are different needs. The review identifier has to exist early and cover everything collected, including documents that will never be produced. The production identifier only has to cover what actually goes out, and it should be sequential with no unexplained gaps. Related: What are the best practices for adding exhibit labels to documents before a hearing?

When a team uses the production Bates number for both jobs, it stamps everything at intake and then withholds privileged or nonresponsive documents. The produced set then has gaps wherever a document was pulled, and the production letter has to explain every gap or the gaps themselves become a discovery issue. When a team uses a separate control number at intake and applies the Bates number only to the final production set, the produced range is contiguous and the privilege log can reference control numbers without exposing the count or position of withheld material. Related: What exactly is Bates numbering and why do law firms rely on it for documents?

Keep reading: What exactly is Bates numbering and why do law firms rely on it for documents?, How do you keep Bates numbering consistent across multiple separate document productions?, When should you apply confidential or privileged watermarks to a batch of documents?. See how PdfStampr helps you bulk pdf stamping and bates numbering.

What stamping before review buys you

Stamping before review is faster in one narrow sense: it is a single pass, and every page has a number from day one. Smaller matters with little privileged material sometimes do this deliberately, accepting a few gaps in exchange for simplicity. It also works when the parties have agreed that gaps are acceptable and that the privilege log will identify withheld documents by Bates range, which some protocols permit. Related: When should you apply confidential or privileged watermarks to a batch of documents?

The costs show up later. If documents are pulled after stamping, the gaps have to be tracked and explained. If a document is split into multiple documents during review, or a family is reconstructed, the pre-assigned numbers no longer map cleanly. And if review reveals that a document needs redaction, the page may need to be re-stamped after redaction anyway, which means the early stamp did not save a pass after all. Related: How do you keep Bates numbering consistent across multiple separate document productions?

What stamping after review buys you

Stamping after review means the production Bates range is applied to a finalized set: responsive, non-privileged, redacted where needed, in the agreed order. The range is contiguous. Families stay together. Nothing has to be explained except what the production letter would already cover. Verification is simpler because the set being stamped is exactly the set being produced, so page counts and ranges should reconcile without adjustments.

This approach requires a control number during review, which most review platforms assign automatically at ingestion. The control number can be stamped onto the review images if reviewers need it on paper, but it is usually kept out of the production images, either by stamping only the review copy or by placing it where it will be replaced by the Bates stamp. The one added task is mapping control numbers to Bates numbers at the end, which any production export handles in a single table.

A decision framework for real matters

Ask three questions. How much material is likely to be withheld? If a large fraction will be privileged or nonresponsive, stamp after review so the production is contiguous. Will the production be rolling? If so, stamp each volume after its review is complete, continuing the sequence, rather than pre-assigning ranges that may not fill. Does the protocol require anything specific? Some ESI agreements define when and how numbers are assigned, and those terms win.

For most litigation matters the answer is: control numbers at intake, review and redaction against control numbers, Bates stamping on the final set, and a control-to-Bates map exported with the production. That sequence costs one export step and saves the explanations, reprints, and awkward gaps that early stamping tends to produce. Write the choice into the matter's production spec so the team does not revisit it every time a new custodian's data arrives.