Patent Opposition Strategy
Pre-Issuance Submission
Submit prior art during examination — before claims issue — with zero estoppel risk.
Quick Answer
Under 35 U.S.C. § 122(e) and 37 C.F.R. § 1.290, anyone can submit prior art against a pending patent application — free for the first 3 documents, no estoppel created. File before the applicant's first office action response or 6 months after publication, whichever is later. A no-risk first move before considering IPR.
Requirements
What to Include in a § 1.290 Submission
Required
- Documents: patents, published applications, printed publications
- Concise description of relevance for each document
- Legible copy of each document (or USPTO accessible patent/pub)
- Statement that the submission is made under § 1.290
- Fee: free for first 3 docs; fee for 4+ docs
NOT Permitted
- Arguments for or against patentability (relevance only)
- Declarations or affidavits
- Non-printed-publication evidence (products, physical samples)
- Claims of invalidity or attorney argument
- Submission after the timing deadline
Comparison
Pre-Issuance vs. IPR vs. Ex Parte Reexamination
| Pre-Issuance Sub. | Inter Partes Review | Ex Parte Reexam | |
|---|---|---|---|
| Who can file | Anyone (anonymous OK via attorney) | Any person (not the patent owner) | Anyone (anonymous OK) |
| Timing | During prosecution — before allowance or first OA + 6 months publication | Within 1 year of service of infringement complaint; after grant | Any time after grant; no deadline |
| Grounds | Any printed publication, patent, or published application | §§ 102/103 — patents and printed publications only | §§ 102/103 — patents and printed publications only |
| Participation after filing | None — examiner decides; no back-and-forth | Full participation — trial proceeding at PTAB | None — requester cannot participate after initial filing |
| Estoppel | NONE — zero estoppel risk | Grounds raised or reasonably could have raised | Limited — only if adverse final decision on specific claims |
| Cost | Free (first 3 docs) to ~$180 for 4–10 docs | $19,000–$25,000 + $150,000–$500,000 legal fees | $12,000 + legal fees for preparation |
| Outcome | Examiner may reject, narrow, or allow claims — no guaranteed result | PTAB invalidates ~80% of reviewed claims; institution rate ~60% | Examiner conducts full examination with requester's art |
| Risk | Low — no adverse consequences if examiner ignores | High — if you lose, IPR estoppel bars all arguments reasonably raisable | Medium — some estoppel risk on finally decided issues |
FAQ
What is a pre-issuance submission?
A pre-issuance submission (also called a third-party submission) under 35 U.S.C. § 122(e) and 37 C.F.R. § 1.290 allows any member of the public — including competitors — to submit prior art to the USPTO during examination of a pending patent application. The submitter can provide patents, published patent applications, and printed publications that may be relevant to the pending claims, along with a brief explanation of their relevance. The examiner is required to consider the submitted prior art. This mechanism was expanded by the AIA in 2012.
When must a pre-issuance submission be filed?
A pre-issuance submission must be filed before the earlier of: (1) the date a notice of allowance is mailed (Notice of Allowance or NOAX); or (2) the later of — (a) 6 months after the date the application is first published under 35 U.S.C. § 122(b), or (b) the date a first rejection under 35 U.S.C. § 132 is mailed. In practice, this creates a window during early examination. Once an applicant files a response to a first office action, the submission may still be accepted if within 6 months of publication. Monitoring competitor applications and acting early is important.
Is there estoppel from filing a pre-issuance submission?
No — unlike inter partes review (IPR) or ex parte reexamination, there is no estoppel for a third party who files a pre-issuance submission under § 122(e). The submitter retains full ability to challenge the resulting patent later in IPR, PGR, ex parte reexamination, or in district court litigation on the same prior art that was submitted. This absence of estoppel makes pre-issuance submission one of the lowest-risk patent opposition mechanisms available — you get the benefit of trying to narrow or kill claims during prosecution without sacrificing any future invalidity arguments.
What prior art can be submitted in a pre-issuance submission?
Under § 1.290(c), a third-party submission may include: (1) patents; (2) published patent applications (U.S. and foreign); and (3) other printed publications (journal articles, conference papers, website content, books). The submission must include a concise description of the relevance of each submitted document (limited to the citations, not a full argument). The description may not contain arguments for patentability. The submitter cannot submit declarations or non-printed-publication evidence (no product samples, no testimony). Each document must be accompanied by a legible copy.
What are the fees for a pre-issuance submission?
A pre-issuance submission is free for the first 3 documents. For more than 3 documents, a fee applies ($180 for large entities for 4–10 documents; scaled for small/micro entities). There is no fee for the submission itself if you stay within the 3-document limit. This low cost (compared to IPR at ~$20,000+) makes pre-issuance submission an attractive first step. However, the downside is that the examiner may give the submission little weight, or the applicant may traverse the prior art and still obtain broad claims — at which point IPR remains available.
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