Patent prosecution services cover everything between an invention disclosure and a granted patent.
The work divides into two kinds. Judgement work — claim scope, response strategy, what to file — and production work, which is drafting text, searching, formalities and docketing.
Those have very different price and quality profiles, and the mistake in scoping an engagement is treating them as one thing.
The decision that matters most is who drafts the claims. Claim scope determines what you eventually own, cannot be broadened after filing, and is where experience shows most.
What is on offer
| Service | What it covers |
|---|---|
| Prior art search | Patentability assessment before filing |
| Drafting | Specification, claims, drawings brief |
| Filing | Formalities, ADS, IDS, declarations |
| Office action responses | Amendments and arguments |
| Examiner interviews | Direct negotiation with the examiner |
| Appeals | PTAB briefing where prosecution stalls |
| Docketing | Deadline tracking |
| Annuities and maintenance fees | Renewal payment |
| Foreign filing coordination | PCT and national phase |
Drafting and office action responses are where the money and the value both concentrate. Everything else is administration or a distinct engagement.
Who provides them
| Patent attorney | Patent agent | Offshore support | |
|---|---|---|---|
| Technical degree | Required | Required | Varies |
| USPTO registration | Required | Required | Not typically |
| Law licence | Yes | No | No |
| Can draft and prosecute | Yes | Yes | Not sign or file |
| Opinions and litigation | Yes | No | No |
| Typical cost | Highest | Lower | Lowest |
A patent agent does the same prosecution work under the same registration. For an engagement that is drafting and prosecution only, the attorney premium buys capability you are not using.
Offshore support handles production work. First drafts, searching, formalities and docketing are routinely offshored; signing and filing before the USPTO require a registered practitioner. See patent attorneys.
What each stage costs
| Stage | Typical fee |
|---|---|
| Patentability search and opinion | $1,500–$3,000 |
| Drafting a utility application | $5,000–$15,000 |
| Filing and formalities | Often bundled |
| Office action response | $2,000–$4,000 each |
| Examiner interview | $500–$1,500 |
| RCE or appeal | $2,000–$8,000+ |
| Issue and grant formalities | Modest |
Most applications need at least one office action response, so budget for it rather than treating it as a surprise. See how much does a patent cost.
Software and biotech sit at the upper end because they draw more rejections and require more rounds.
Fee models
| Model | Suits | Watch for |
|---|---|---|
| Flat fee per stage | Drafting, office action responses | What counts as one stage |
| Hourly | Opinions, complex prosecution, disputes | No cap without asking |
| Capped fee | Predictable work with variance | What happens above the cap |
| Fixed portfolio retainer | High volume | Scope creep in both directions |
| Deferred | Some firms for startups | Terms on the deferral |
Flat fee per stage is the norm and the right default. The question worth asking is what a stage includes — whether a second round of examiner correspondence sits inside the same fee or starts a new one.
Get the scope in writing per stage. An engagement letter listing drafting, filing and each response separately is easier to check and to budget than one number.
Ask what triggers an extra charge. Restriction requirements, examiner interviews and Information Disclosure Statements are common mid-course items that may or may not be inside the quote.
Scoping the engagement
| Decide up front | Why |
|---|---|
| Which stages are included | Prevents surprise invoices |
| Who drafts | The single most consequential choice |
| Response strategy authority | Who decides whether to amend or argue |
| Interview policy | Whether the provider will request them |
| Reporting cadence | Visibility without chasing |
| Foreign filing handling | Coordination or direct instruction |
| Docketing ownership | Yours, theirs, or both |
Response strategy authority is worth settling early. Whether the provider may amend claims without instruction, or must present options, determines how much scope gets surrendered without a conversation.
Interview policy matters because interviews are underused. A provider who requests them routinely saves rounds; one who never does costs money silently.
What to keep in-house
| Task | Keep in-house | Why |
|---|---|---|
| Invention disclosure capture | Yes | Your engineers know the alternatives |
| The decision to file | Yes | Commercial judgement |
| Describing alternatives | Yes — supply them | Nobody else can invent variations of your technology |
| Technical review of drafts | Yes | Fluent and wrong is the hardest error to spot |
| Competitor and product context | Yes | Shapes claim targeting |
| Renewal decisions | Yes | Commercial, not legal |
| Drafting | No | Specialist skill |
| Formalities and docketing | No | Administrative |
Describing alternatives is the highest-value thing a client contributes. An attorney cannot invent variations of your technology; you can. A specification covering five variants supports far broader claims than one covering the version you built.
Technical review catches what nobody else will. A generated or drafted description can read fluently and be technically wrong, and only someone who understands the technology will notice.
Questions that separate providers
| Ask | Good answer | Warning sign |
|---|---|---|
| Who drafts the claims personally? | A named person | Vague |
| What have you prosecuted in my field? | Specific technologies and art units | "All technologies" |
| What is the fee per stage? | Written scope and figure | One number for everything |
| What did you make of my prior art search? | Substantive comment on references | Dismissive or unread |
| What is the weakest point here? | A direct answer | "It looks very strong" |
| What are the odds of grant? | A range with reasoning | A guarantee |
| Is any work subcontracted? | Disclosed | Not mentioned |
Vagueness about who drafts is the most informative warning. Work delegated to a junior without disclosure is a common complaint and an easy thing to get in writing.
A guarantee of grant is disqualifying. Nobody controls what prior art the examiner finds.
Controlling cost
| Action | Effect |
|---|---|
| Run a free prior art search first | Eliminates applications not worth filing |
| Supply a detailed disclosure with alternatives | Cheaper drafting, broader claims |
| Supply prior art you have found | Avoids drafting into known art |
| Respond early rather than at the deadline | Avoids extension fees and PTA loss |
| Request examiner interviews | Can replace a written round |
| Concede formal points, argue substantive ones | Fewer rounds |
| Agree written scopes per stage | Prevents surprises |
Responding early saves twice. Extensions cost fees and reduce Patent Term Adjustment day for day, so delay is paid for in money and in term.
Examiner interviews are the highest return per hour in prosecution. A twenty minute call frequently establishes exactly which limitation would be allowable, replacing months of written exchange. See patent prosecution.
Worked example: two engagements
Same invention, two scoping decisions.
| Engagement A | Engagement B | |
|---|---|---|
| Provider | Law firm, attorney | Patent agent |
| Prior art search | Firm ran it, $2,000 | Client ran free search first, agent confirmed, $1,200 |
| Disclosure supplied | Two pages | Twelve pages with six alternatives |
| Drafting | $11,000 | $6,500 |
| Office action responses | 2, at $3,200 each | 2, at $2,400 each |
| Interview | Not requested | Requested — saved a round |
| Extensions taken | Two 2-month | None |
| Total to grant | $21,600 | $13,900 |
| Claim breadth achieved | Good | Good — alternatives supported amendments |
| PTA | Reduced by extensions | Preserved |
The disclosure did most of the work. Six documented alternatives gave the agent room to amend around prior art without new matter problems, which is exactly what breadth depends on.
The interview replaced a written round, saving both a fee and about five months.
The extensions cost Engagement A twice — the fees, and the Patent Term Adjustment reduced day for day.
The agent premium difference was real but secondary. Client preparation accounted for more of the gap than the provider's rate did.
Managing a provider relationship
| Practice | Effect |
|---|---|
| One named contact on each side | Fewer dropped items |
| Regular status reporting | Visibility without chasing |
| Copies of all USPTO correspondence | Independent record |
| Your own deadline calendar | Do not rely solely on theirs |
| Annual fee and performance review | Keeps scope honest |
| Clear escalation path | For deadline emergencies |
Keep your own calendar regardless of who docketed the matter. Outsourcing the tracking does not outsource the consequence of a missed date.
Ask for copies of all correspondence. An independent file means a change of provider is an administrative task rather than a reconstruction.
Foreign filing coordination
| Task | Usually handled by |
|---|---|
| PCT application | US provider |
| National phase entry | US provider instructing local agents |
| Local prosecution | Local agents in each country |
| Translations | Specialist providers |
| Annuities | Annuity payment service |
Foreign costs multiply quickly. A family in the US, Europe, China and Japan commonly exceeds $80,000 over its life, mostly in annual renewal fees and local agent charges. See patent annuity.
Coordination is itself a service. One provider instructing local agents is simpler than managing four relationships, and it costs a margin.
What no provider changes
Excellent prosecution does not make an invention commercially valuable.
| Ipiry Patent Survival Curve v1.0 | Rate |
|---|---|
| Survive the 3.5-year fee (2022 cohort) | 85.8% |
| Survive the 7.5-year fee (2018 cohort) | 64.6% |
| Reach full term (2014 cohort) | 41.4% |
| Abandoned before full term | 58.6% |
Computed from 27,273,654 USPTO maintenance fee records covering 8,262,336 US utility patents — see the patent survival curve.
Most granted patents are abandoned because nobody practises the invention. No amount of drafting skill changes that.
Which is an argument for the search, not against the provider. The cheapest thing a good adviser does is tell you early that an application is not worth filing, and one who never says that is not assessing anything.
Patent prosecution services: the checklist
- Separate judgement work from production work when scoping. They price differently and matter differently.
- Use a patent agent where litigation and opinions are not anticipated.
- Run a free prior art search before engaging anyone. It makes the first conversation productive and eliminates weak applications.
- Supply a detailed disclosure with alternatives. This is the highest-value thing you contribute.
- Ask who drafts the claims personally, and get the answer in writing.
- Get written fee scopes per stage, not one number for the matter.
- Ask what triggers extra charges — restrictions, interviews, IDS filings.
- Review drafts technically yourself. Fluent and wrong is the hardest error to catch.
- Respond early rather than taking extensions, which cost fees and Patent Term Adjustment.
- Request examiner interviews. They are the highest return per hour in prosecution and are consistently underused.