BASALT · JOURNAL
Redacting in patent and IP matters
IP matters have a structure other litigation does not: the material being protected is often the thing in dispute, and disclosure to the wrong tier destroys the right being asserted.
Confidentiality tiers
Protective orders in IP matters commonly establish several levels, such as confidential, attorneys' eyes only, and source code. Each has a different permitted audience.
That means one redacted version is rarely enough. The same document may need two or three versions with different material removed, and mixing them up is the failure mode.
Label versions clearly and produce them from a recorded set of marks rather than by editing one into another, which is how a more-redacted version ends up containing less-redacted content.
Trade secrets
Manufacturing parameters, formulations, yields, supplier identities and pricing are frequently the actual secret. Removing them properly matters more than in most litigation, because the value of the asset depends on it remaining unknown.
Technical drawings and figures
These are images. Redacting a dimension on a drawing means destroying pixels, and a drawn box is removed in one click.
Vector drawings are worse: content covered by a filled shape is still present as vector data and can be recovered by removing the covering object, which requires no specialist tooling at all.
Source code
Usually governed by its own tier and often produced on a standalone machine rather than as documents. Where code appears in exhibits, remember that comments and variable names frequently disclose more than the logic.
Prior art and dates
Dates and version identifiers can be as sensitive as content in IP matters, because they establish or undermine priority. Redacting a specification while leaving a document date visible can concede the point the specification was protecting.
Checks
Extract text and search for the specific terms, including part numbers and internal code names, which frequently appear in headers and file paths rather than in body text.
For every figure, look at the full size image in the output. For vector content, confirm covered material is genuinely gone rather than merely obscured.
Read metadata, which in engineering documents often names the CAD file, the author and the project.
This is a description of common practice rather than legal advice. Obligations vary by jurisdiction and by the terms you are working under, and the authority that governs your work is the one to check with.
Frequently asked questions
Why is IP redaction different from other litigation?
Protective orders commonly establish several confidentiality tiers with different permitted audiences, so one document may need multiple redacted versions. The material being protected is also frequently the asset in dispute, so disclosure destroys the right being asserted.
How do I redact a technical drawing?
As an image, by destroying the pixels and re-encoding. Vector drawings need more care: content covered by a filled shape remains in the file as vector data and is recovered by deleting the covering object.
Should dates be redacted in patent matters?
Often yes. Dates and version identifiers establish or undermine priority, so leaving a document date visible can concede the point that redacting the specification was meant to protect.
How should multiple confidentiality tiers be produced?
From a recorded set of marks, producing each version from the original rather than editing one version into another. That is how a more restricted version ends up accidentally containing less restricted content.
Doing it in Basalt
Basalt is a native macOS PDF toolkit built around redaction that removes content rather than covering it. After writing a file it re-opens its own output with an independent parser, searches for the material again, and refuses to save if anything is found. It also strips metadata, XMP, attachments, embedded scripts and hidden layers as part of the same operation, and a separate Inspector reports what any PDF still hides, including documents Basalt did not create. Everything runs on your Mac: the engine holds no network entitlement at all, which macOS enforces at the code-signature level. A one time $29 licence covers up to three Macs, free for the first 24 hours. basaltformac.com, or brew install --cask chipmunk1101/tap/basalt.
Redaction that proves itself
Basalt destroys the content you mark, then re-opens the file it wrote and proves the content is gone before it saves anything. Your documents never leave your Mac.