In short
An IDS that does not comply with 37 CFR 1.97 or 1.98 is placed in the file but never considered by the examiner, and the Office does not have to tell you in advance. Five failures account for most of them: a non-English reference with no concise explanation of relevance, a missing legible copy, a filing made outside the 1.97(b) window without the required statement or fee, an incomplete non-patent literature citation, and a listing that breaks the format rules in 1.98(a)(1). Each one is avoidable, and each one is checkable before you file.
General information, not legal advice. Reading this article does not create an attorney-client relationship.
The rule that does the damage is short. Under 37 CFR 1.97(i), an IDS that fails either section is placed in the application file but is not considered. Examiners strike through the citations that do not comply and tell you why, which means you find out after the deadline that mattered has passed.
37 CFR 1.98(a)(3)(i) requires a concise explanation of the relevance of each listed item that is not in English, as understood by the person designated in 1.56(c) who knows the content best. Miss it and the examiner strikes that citation.
Four things satisfy the requirement, and most practitioners already have one of them on file:
- A complete English translation of the reference. If you submit one, no concise explanation is needed.
- An English-language version of a foreign search report or office action that cited the reference. An X, Y or A designation on a search report is enough on its own.
- An English-language abstract of the reference, including one generated by a foreign patent office.
- A short statement pointing to the figure or paragraph that matters.
Two traps. First, 1.98(a)(3)(ii) separately requires you to file any written English translation that is in your possession or readily available — that is a copy requirement, not a substitute for the explanation, and it applies even when you did not commission the translation. Second, saying that a reference was cited in the prosecution of another US application does not satisfy the requirement unless that application is relied on under 35 U.S.C. 120.
37 CFR 1.98(a)(2) requires a legible copy of each foreign patent, each publication or the portion that caused it to be listed, each cited pending unpublished US application, and all other cited information. US patents and US patent application publications need no copy unless the Office asks.
| Document type | Copy required? |
|---|---|
| US patent, US patent application publication | No, unless requested by the Office |
| Foreign patent document | Yes |
| Non-patent literature | Yes, or the portion that caused it to be listed |
| Pending US application stored in IFW | Waived for the specification, claims and drawings |
| Office action or other material from a pending US application | Yes |
There are two exemptions, and both are narrower than they look. Under 1.98(c), where two or more listed references are substantively cumulative, you may file one copy if you state that the others are cumulative — the examiner will then consider only the one you filed. Under 1.98(d), copies are not required if the information was submitted in an earlier application that is properly identified in the IDS, relied on for an earlier filing date under 35 U.S.C. 120, and whose IDS complied with 1.98(a) through (c). That second exemption does not extend to information cited in a PCT application.
37 CFR 1.97 ties the requirements to four stages. Most struck citations at this step come from treating stage 3 like stage 2: the statement alone is not enough once prosecution has closed.
| When the IDS is filed | What must accompany it |
|---|---|
| Within three months of filing or national stage entry, or before the first Office action on the merits, whichever is later; for an RCE or CPA, before the first action on the merits | Nothing |
| After that, but before a final action, a notice of allowance or an action closing prosecution | A 1.97(e) statement or the 1.17(p) fee |
| After that, up to and including payment of the issue fee | A 1.97(e) statement and the 1.17(p) fee |
| After payment of the issue fee | Not considered; see the QPIDS pilot or a petition under 1.313(c) |
Three details worth holding on to. A notice of appeal closes prosecution, so an IDS filed on or after that date falls under 1.97(d), not (c). No extensions are available under 1.136 — but under 1.97(f), where a bona fide attempt was made and part of the content was inadvertently omitted, the examiner may give additional time to complete it. And the 1.97(e) statement has a hard edge: you cannot make it for a reference that a foreign office first cited more than three months ago, even if a second office cited the same reference last week.
1.98(b)(5) requires each publication to be identified by publisher, author (if any), title, relevant pages, and date and place of publication. Non-patent literature arrives from foreign associates in whatever form the sender had, which is why this is the field that most often comes up short.
Four points that are easy to get wrong:
- Pages. When no page numbers are given, the Office understands all pages of the publication to be the relevant ones. You are not required to narrow it.
- Date. The date must include at least the month and the year. A year alone is accepted only if you point out in the IDS that the year is sufficiently earlier than the effective US filing date and any foreign priority date that the month is not in issue.
- Place of publication. This means the name of the journal, magazine or other publication. For an Office action or a US application listed as NPL, the USPTO is understood to be the publisher and place; for a foreign or international search report, the issuing office is.
- Internet publications. The URL of the source page serves as the place of publication. For an archived page, give both the archived URL and the original. Where the publication date is unknown, give at least a retrieval date or a time frame.
Pending US applications and Office actions can be listed in the non-patent literature section or in a new section you label.
1.98(a)(1) sets out requirements that have nothing to do with the art you are citing, which is exactly why they get overlooked when a listing is assembled by hand or carried over from another file.
- US patents and US patent application publications must be listed in a section separate from other documents. The separation lets the Office pull the numbers by OCR.
- Each page of the list must carry the application number of the application the IDS is being filed in, if known.
- Each page must have a column with space next to each document for the examiner's initials.
- Each page must have a heading that clearly identifies the list as an information disclosure statement.
- The list must be submitted on a separate paper. It cannot be incorporated into the specification.
Form PTO/SB/08 satisfies all five, which is the practical reason to use it. The failure mode the MPEP warns about by name is reusing a PTO/SB/08 or PTO-892 from another application: it carries the other application's number, and where an examiner has already initialled it there is no space left for the examiner on your file.
Identification follows 1.98(b). US patents by inventor, patent number and issue date. US patent application publications by applicant, publication number and publication date. Pending US applications by inventor, the eight-digit application number and filing date. Foreign documents by the issuing country or office, document number and the publication date shown on the document. If an application you are listing has since issued or published, list the patent or the publication instead.
A checklist before you file
- Every non-English reference has a concise explanation, a full translation, an English search report, or an English abstract
- Any English translation already in your possession is attached
- Copies attached for foreign patents, NPL, and pending US applications not in IFW
- Cumulative references covered by a statement under 1.98(c), if you are relying on it
- Filing stage identified, and the 1.97(e) statement and 1.17(p) fee supplied as that stage requires
- Every NPL entry carries publisher, author, title, pages, and date and place of publication
- US patents and publications in their own section
- Application number, initials column and IDS heading on every page of the list
- List filed as a separate paper, not in the specification
Why we wrote this
Every item above is a rule you can look up. What makes them expensive is that the reference material arrives scattered across emails and attachments from clients and foreign associates, and the checking happens by hand, late, under a deadline.
ClaimxArk was built by a patent attorney with over ten years of US prosecution experience, after doing that checking by hand for long enough to want it automated. It takes the unstructured material that references actually arrive in — emails, PDFs of foreign office actions and search reports, NPL attachments — extracts the citation data, and fills a PTO/SB/08-format IDS, with each entry shown next to the source it came from. The attorney still reviews and signs.
Draft your next IDS from the client's email.
ClaimxArk reads the email and attachments, drafts the IDS and ADS, and shows every entry next to its source.