Canadian patents & industrial designsMontréal · Canada
Independent practice. Direct representation.

Canadian IP.
Personal attention.
Clear direction.

Patent and industrial design representation for international associates, businesses and inventors — with direct access to your Canadian agent.

Ian J. Colton, Ph.D. · Principal · Canadian Patent Agent

Canadian patent prosecutionPCT national phase entryIndustrial design protection
Our practice

Focused expertise.
From idea to application.

From assessing an invention to drafting an application and responding to examination, our services support businesses, inventors and international associate firms.

01 / NATIONAL PHASE

Your PCT application.
Our Canadian focus.

Canadian national phase entry, review of filing instructions and coordination with your international prosecution team.

02 / PROSECUTION

A considered response.
A clear next step.

Review of examiner reports, preparation of responses and claim amendments, and advice on Canadian prosecution strategy.

03 / EXAMINATION

Plan the request.
Understand the costs.

Examination requests, claim-set review and official fee planning aligned with the needs of your application.

04 / INDUSTRIAL DESIGNS

Protect the appearance.
Define the design.

Canadian industrial design applications, representation review and responses to examination objections.

05 / PATENT DRAFTING

Understand the invention.
Build the application.

Preparation of patent specifications and claims, with particular experience in chemistry, biochemistry and related technologies. The drafting process starts with your technical disclosure and the features that distinguish your invention.

06 / PATENTABILITY SEARCHES

Investigate the landscape.
Inform your next step.

Patentability searches and review of relevant prior art to help assess an invention and inform application drafting. Discuss the scope of the proposed search and the questions you need it to address.

Support for international protection

Our experience includes patent prosecution involving Canada, the United States, Europe, China, Japan and Australia. We help coordinate foreign patent and design matters with local associates, keeping the technical disclosure and prosecution objectives in view across jurisdictions.

Meet your Canadian agent

A direct relationship.
A focused practice.

Ian J. Colton, Ph.D.

Principal · Canadian Patent Agent

Ian J. Colton is a registered Canadian Patent Agent and principal of Colton Intellectual Property Inc. His practice focuses on patent drafting, prosecution and industrial design protection, with particular experience in chemistry, biochemistry and related technologies.

He holds a Ph.D. in Chemistry from McGill University and completed postdoctoral research at Harvard University.

Principal-led representationCanadian prosecution focusInternational associate support
Scientific & technical expertise

Understand the science.
Represent the invention.

A foundation in chemistry and biochemistry, supported by experience across a range of scientific and mechanical technologies.

Chemistry & chemical processes

Organic chemistry, chemical compounds, synthesis and chemical-processing inventions. A research background helps connect the experimental detail to the invention being described.

Biochemistry & pharmaceuticals

Biochemical, biological and pharmaceutical technologies, supported by training in biochemistry and research involving enzymes and biological systems.

Mechanical technologies & designs

Mechanical inventions and industrial designs, with attention to the relationship between structural features, their function and the representations used in an application.

Planning tool

A clearer view of
examination costs.

Estimate examination-request fees using CIPO’s published 2026 tariff. Select the entity category and whether CIPO performed the international search; the applicable rates are filled in automatically.

2026 official fees · CAD · Checked October 25, 2026

Small entity rates require eligibility and a valid declaration. Rates shown apply to payments received in 2026; verify the tariff for later payments. Review CIPO patent fees ↗

Preliminary official fee estimate
Examination request$1,190.13 CAD
Excess claims (0)$0.00 CAD
$1,190.13 CAD

2026 standard entity rates · 20 claims · ordinary examination fee.

Professional fees, taxes, filing and maintenance fees, and any later excess-claim fees at final payment are excluded. This is not a quotation.

Articles & practical guidance

Useful reading.
Better preparation.

Practical notes for inventors, businesses and international associates. Expand an article to read it in full.

PATENT DRAFTING

Preparing an invention disclosure: what your patent agent needs

A useful disclosure explains the technical contribution, not simply the product you intend to sell.

Read article: Preparing an invention disclosure: what your patent agent needs

Start with the problem and your solution

Explain the problem you encountered, how existing approaches address it and what you changed. Identify the features you consider important, and separate those features from optional refinements. A working prototype can help explain the invention, but drawings and a clear technical description are also useful discussion materials.

Describe the alternatives

Provide examples of different ways to implement the idea. For a mechanical invention, identify how the parts interact. For a process, explain the steps and which conditions matter. Make clear what you have tested and what remains a proposal. The description and claims serve different purposes: the description teaches the invention, while the claims define the protection sought.

Bring the surrounding information

Collect relevant publications, earlier applications, contributor details and any planned demonstrations or disclosures. Tell your agent about commercial priorities and intended markets. A complete initial discussion helps identify questions before drafting starts. The application should contain the necessary technical disclosure at filing; missing subject matter cannot simply be added later.

Further reading: CIPO: completing a patent application ↗

General information only; the appropriate approach depends on your invention and circumstances.

Discuss your matter →
PATENT SEARCHES

Patentability searches: asking a more useful question

A search is most informative when it is directed to the features that distinguish your invention.

Read article: Patentability searches: asking a more useful question

Search the concept, not just the product name

A competitor may describe a similar idea using different vocabulary. Begin with the technical problem, essential components and alternative terminology. Patent classifications and references cited in relevant documents can help uncover material that a single keyword search misses.

Read beyond the title

A patent document may discuss a relevant feature in its description or drawings even when the title looks unrelated. Record the publication number and the passages that matter, rather than collecting a long list of links without explaining their relevance.

Use the results to guide the discussion

Compare what the documents actually disclose with your proposed contribution. A search can help focus drafting and identify questions for further investigation. It is not a guarantee that every relevant document has been found or that a patent will be granted. Whether you can obtain protection and whether a planned product may infringe another party’s rights are different questions; clarify the purpose of the review at the outset.

Further reading: CIPO: before you apply for a patent ↗

General information only; the appropriate approach depends on your invention and circumstances.

Discuss your matter →
CHEMISTRY & BIOCHEMISTRY

From laboratory work to an invention disclosure

Organized experimental information helps turn a scientific discussion into a productive patent-drafting meeting.

Read article: From laboratory work to an invention disclosure

Separate the finding from the explanation

Identify what you observed and the evidence supporting it. Distinguish measured results from a proposed mechanism or an expectation about untested compounds. A hypothesis can be worth discussing, but it should not be presented as an experiment you performed.

Make the records usable

Bring clearly labelled structures, compound identifiers, reaction schemes and experimental procedures. Where relevant, identify concentrations, temperature, reaction time, purification, analytical methods and controls. Preserve units and explain how reported values were calculated. For biochemical work, include enough context to understand the assay and its limitations.

Explain what may vary

Discuss which structures, ingredients or process conditions you believe can change while retaining the useful result, and why. Identify unsuccessful experiments as well as promising ones: both can help frame questions about the technical contribution. This is a preparation checklist, not a statement that every application needs the same experiments or that a particular dataset establishes patentability.

Further reading: CIPO: description and application requirements ↗

General information only; the appropriate approach depends on your invention and circumstances.

Discuss your matter →
INDUSTRIAL DESIGNS

Patent or industrial design: what are you protecting?

A product’s operation and its visual appearance raise different protection questions.

Read article: Patent or industrial design: what are you protecting?

Identify the feature that matters

An industrial design concerns visual appearance, such as shape, configuration, pattern or ornament. Patent protection addresses qualifying inventions. For example, the mechanism of a new dispenser and the appearance of its housing should be considered separately. A product may warrant a discussion of both forms of protection.

Review the representations carefully

For a design discussion, collect clear views of the article and identify the visual features you want considered. Check that the views depict the same design consistently. Explain which aspects concern appearance and which are dictated by the way the product operates.

Plan around the product launch

Tell your agent about related filings, published images, sales activity and upcoming launches. Filing strategy depends on the particular facts and markets. Do not assume that protection obtained for appearance also covers the underlying mechanism, or that one Canadian registration provides worldwide protection.

Further reading: CIPO: industrial designs guide ↗

General information only; the appropriate approach depends on your invention and circumstances.

Discuss your matter →
PCT NATIONAL PHASE

Entering the Canadian national phase: preparing instructions

A practical checklist for international associates before Canadian national phase entry.

Read article: Entering the Canadian national phase: preparing instructions

Confirm the application particulars

Supply the PCT application and publication numbers, international filing date, applicant details, and available priority information. Confirm the identity of the applicant and any relevant changes in ownership.

Review the filing package

Provide the published application and amendments, identify the language of the international application, and flag any translations or missing documents. Confirm the claims intended for Canadian prosecution and whether an examination request should accompany entry.

Coordinate timing and costs

Canadian national phase deadlines and possible late-entry remedies depend on the circumstances and current law. Ask your Canadian agent to confirm the applicable deadline, official fees, claim-related costs, and instructions well in advance.

General information only; verify current CIPO requirements and obtain advice on the particular facts.

Discuss your matter →
PATENT EXAMINATION

When should examination be requested in Canada?

The timing of examination can influence prosecution strategy and official costs.

Read article: When should examination be requested in Canada?

Understand the deadline

Canadian applications are subject to an examination-request deadline that depends on the filing and applicable transitional rules. Do not assume the same deadline applies to every application.

Consider the claim set

Before requesting examination, consider whether amendments would improve claim clarity or reduce excess-claim fees. A claim strategy should reflect the disclosure, commercial priorities and foreign prosecution history.

Balance delay and progress

Earlier examination may help obtain a decision sooner; waiting can allow related foreign cases to develop. The best timing depends on business objectives and the actual statutory deadline.

General information only; verify current CIPO requirements and obtain advice on the particular facts.

Discuss your matter →
PATENT PROSECUTION

Responding to a Canadian examiner’s report

An effective response addresses the examiner’s objections while preserving useful claim scope.

Read article: Responding to a Canadian examiner’s report

Read the objections in context

Identify each objection and the cited references. Compare the examiner’s interpretation with the actual claim language and the specification.

Choose amendments carefully

An amendment should have support in the application as filed. Consider how narrowing language could affect competitors, future products and related applications.

Keep the record coherent

Explain the basis for proposed amendments and arguments clearly. Response periods and available extensions should be checked against the specific communication.

General information only; verify current CIPO requirements and obtain advice on the particular facts.

Discuss your matter →
PATENT MAINTENANCE

Canadian patent maintenance fees: avoiding missed deadlines

Maintenance fee planning begins early and continues throughout the life of an application or patent.

Read article: Canadian patent maintenance fees: avoiding missed deadlines

Create a reliable schedule

Canadian patent maintenance fees are generally tied to anniversaries of the filing date, beginning with the second anniversary. Confirm the applicable schedule and any special circumstances.

Record actual payment dates

Keep receipts and the dates payments were submitted. Administrative processing dates shown by an office may differ from the date the payer submitted a fee.

Check responsibility and status

Confirm who is responsible for each payment, especially following a transfer or change of representative. Late payment and reinstatement provisions are fact-specific and should not be treated as a routine substitute for timely payment.

General information only; verify current CIPO requirements and obtain advice on the particular facts.

Discuss your matter →
PATENT OWNERSHIP

Patent ownership changes: assignments, mergers and name changes

Different corporate events require different evidence and recording instructions.

Read article: Patent ownership changes: assignments, mergers and name changes

Identify the legal event

An assignment, statutory merger and corporate name change are not interchangeable. Determine what actually happened and when.

Trace the chain of title

Review the relevant agreements, merger certificates and corporate records. Identify the legal owner before and after each event and ensure application numbers and names are accurate.

Coordinate the record

Consider whether a recordal is appropriate at CIPO and in other jurisdictions. A change of ownership does not necessarily mean the existing agent’s representation continues without updated instructions.

General information only; verify current CIPO requirements and obtain advice on the particular facts.

Discuss your matter →
INDUSTRIAL DESIGNS

Preparing industrial design drawings for Canada

Consistent visual representations are central to a clear industrial design application.

Read article: Preparing industrial design drawings for Canada

Show the article consistently

Use clear views that accurately depict the same design. Check perspective, line quality and consistency among the figures.

Distinguish claimed and unclaimed features

Where appropriate, visual conventions such as broken lines may distinguish portions that are not part of the claimed design. The statement and drawings should work together.

Review before public disclosure

Discuss planned sales, online listings and exhibitions before filing. Publication and foreign filing plans can affect available protection.

General information only; verify current CIPO requirements and obtain advice on the particular facts.

Discuss your matter →
INTERNATIONAL STRATEGY

Priority claims and foreign filing: planning the first year

Early coordination can reduce avoidable problems when seeking protection abroad.

Read article: Priority claims and foreign filing: planning the first year

Confirm the first filing

Record the first application’s filing date, number, country and subject matter. Determine which later applications can properly claim priority.

Compare the disclosures

Priority entitlement is not established merely by listing a number. Consider whether the earlier filing supports the subject matter of the later claims.

Plan country decisions

PCT and direct national or regional filing routes have different procedures and deadlines. Review markets, budgets, translations and local counsel needs before the relevant dates.

General information only; verify current CIPO requirements and obtain advice on the particular facts.

Discuss your matter →
CLAIM STRATEGY

Excess claim fees in Canadian patent prosecution

The number and timing of claims can affect official fees and amendment strategy.

Read article: Excess claim fees in Canadian patent prosecution

Count claims accurately

Review the current claim set and identify any applicable excess-claim fees under the rules governing the application.

Coordinate examination and amendments

The timing of an examination request and later claim amendments may affect fees. A reduced claim set may be useful, but should not compromise commercially important coverage without analysis.

Keep records of submissions

Maintain copies of filed claim sets, official receipts and instructions so that later fee assessments can be checked against the prosecution history.

General information only; verify current CIPO requirements and obtain advice on the particular facts.

Discuss your matter →

Updated November 1, 2026. These 12 articles provide general information, not legal advice. Verify current rules and deadlines before acting.

Working together

Good instructions.
A stronger start.

A few practical details help us review a new matter and identify the next steps.

For foreign associates and corporate IP teams

Work directly with the principal on Canadian filing instructions, examiner report responses and prosecution planning. When requesting a quotation, identify the work required and any relevant dates so that professional fees and official disbursements can be considered separately.

Instructing a Canadian national phase entry

Include the PCT application or publication number, applicant details, priority information and any deadline identified by your team. Indicate whether a translation, amendments or an examination request should be considered.

Transferring a pending Canadian application

Provide the Canadian application number, the latest examiner report, relevant correspondence and your proposed instructions. Identify outstanding dates and any change of applicant or agent requiring attention.

Starting an industrial design matter

Share the article name, proposed representations, applicant information and details of related filings or disclosures. These materials help define the scope of the initial review.

Preparing for an initial patent drafting discussion

Prepare a description of the invention, how it works and what you consider new. Include drawings, examples or experimental results where relevant, along with any publications, public disclosures or related applications. Contact us first to arrange the initial review and exchange of technical materials.

Requesting a budget

Identify the application, work requested, expected timing and any instructions affecting the scope. Professional fees and official disbursements can then be considered for the particular matter.

Start a conversation

Your next IP matter
starts here.

Contact Ian Colton to discuss patent drafting, Canadian prosecution, an industrial design matter or a request for a quotation.

For an existing application, include its reference number and identify any relevant dates in your inquiry.

An inquiry does not establish an agent–client relationship or confirm acceptance of instructions. Please await an express acknowledgment before relying on any deadline being handled.

Direct contact

Colton Intellectual Property Inc.

Email
info@coltonip.com
Telephone
+1 (514) 341-5371
Mailing address
1541-555 Chabanel St. W.
Montreal, Quebec H2N 2J2
Canada
Practice location
Montréal, Quebec, Canada
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