| name | hlr-preemption-check |
| description | Use when verifying that a Harvard Law Review (HLR) argument has not already been made — the law-review "preemption check" run across SSRN, Westlaw/Lexis, HeinOnline, and Google Scholar BEFORE drafting. Confirms originality and refines the claim; it does not draft the thesis (hlr-thesis-and-contribution) or the literature engagement in the body. |
Preemption Check (hlr-preemption-check)
In legal scholarship, "preemption" means: has someone already published your argument? Running this
search before you write is the single highest-return habit in the field — discovering that your claim
appeared in a 2024 article after you have drafted 25,000 words is the classic wasted summer. A clean
preemption check both protects originality and sharpens your contribution against the nearest prior work.
When to trigger
- You have a candidate thesis and have not yet written the body
- You are about to claim "no one has argued X" or "first to address Y"
- A draft is done and you want to confirm nothing close appeared while you wrote
- An editor or colleague says "isn't this just [Author]'s point?"
Where to search (run all four; do not stop at one)
| Source | What it catches | Note |
|---|
| SSRN / bepress | Working papers and forthcoming articles not yet in print | Catches the most recent, still-in-press work — the highest preemption risk |
| Westlaw / Lexis journals databases | Published law-review articles, full text | Use field-restricted and date-restricted queries |
| HeinOnline | Deep historical law-review archive, PDF page images | Best for older and exact-pinpoint history of an idea |
| Google Scholar | Cross-disciplinary and gray-literature reach | Catches non-law work and citation chains |
How to search well
- Search the claim, not just the topic. Anyone can find articles on "qualified immunity"; search the
specific move — e.g., "qualified immunity" + "common-law indemnification" + your distinctive hook.
- Vary vocabulary. Authors name the same idea differently; run synonyms and the doctrinal terms of
art, not only your coinage.
- Date-bound and re-run. Restrict to the last 2-3 years for in-press risk, then re-run the search
right before submission — SSRN updates daily during the seasons.
- Follow the citation web. When you find the nearest neighbor, read what it cites and what cites it.
- Read the abstracts and intros, not just titles — preemption hides in the framing, not the keyword.
Reading the result (three outcomes)
- Genuinely new → state originality precisely and cite the nearest neighbors as the literature you
advance (hand to
hlr-argument-structure for engagement).
- Partially preempted → refine the claim to the part that remains open; recast the contribution
("prior work shows A; this piece shows the stronger/different B"). Loop
hlr-thesis-and-contribution.
- Fully preempted → change the claim or the angle before investing in the draft. Better now than after.
Checklist
Anti-patterns
- Searching only the topic ("free speech") instead of the argument — everything looks preempted or nothing does
- Relying on a single database (especially skipping SSRN, where in-press preemption lives)
- Searching once, months before submission, and never re-running
- Hiding the nearest competitor instead of citing and distinguishing it
- Keeping a "first to address" claim the search cannot support
Preemption is not the same as the literature review
A preemption check protects originality: has this argument been published? The literature review in
the body does different work — it situates the claim among the scholarship a generalist editor expects you
to engage (handled inside hlr-argument-structure). The same searches feed both: the nearest neighbors you
find here become the works you distinguish in the body. Do not let a clean preemption result excuse a thin
literature engagement, and do not let a thorough literature review substitute for the targeted, claim-level
preemption search — they answer different questions.
Worked micro-pattern (illustrative)
A hypothetical author plans to argue that a doctrine D should be abolished. A topic-level search for "D"
returns hundreds of hits and feels hopeless. Re-running the search at the argument level — "D" +
"abolition" + the distinctive ground the author relies on — surfaces only two close pieces: one argues for
narrowing D (not abolishing it), the other abolishes D on different grounds. The verdict is partially
preempted: the claim survives, recast as "prior work narrows D or abolishes it on ground X; this Article
abolishes it on the stronger ground Y." The contribution is now sharper because of the search. (Counts
and grounds illustrative.)
Output format
【Claim searched】the specific argument (not the topic)
【Databases】SSRN / Westlaw-Lexis / HeinOnline / Scholar [all run? Y/N]
【Nearest neighbors】the 3-5 closest pieces (author, year, the move they make)
【Verdict】new / partially preempted / preempted
【Refinement】how the claim now differs from each neighbor
【Next】hlr-argument-structure (if new) or hlr-thesis-and-contribution (if recast)
Supplementary resources
