Product Development

At Lathrop, we know the process of developing a product is so much more than good design. Our robust product development process, honed through decades of practical application, ensures the development process — including schedule and budget — is controlled, that your business requirements are met, and that it results in the most optimal design.


We use a phased development process which provides identifiable milestones and deliverables. It also includes discrete points to assess the project and make any needed adjustments to ensure it's on track to meet your business goals. At the end of each phase, we turn all work product over to you, so you'll have in-hand quantifiable results that validate the resources and budget expended.

Phase Name Typical Deliverables
Phase 0 Planning and Risk Assesment
  • Detailed project plan, budget, and schedule
  • Risk identification and mitigation plan
  • High level concepts
Phase 1 Concepts and Risk Mitigation
  • Functional breadboards and other risk mitigation results
  • Approved design requirements
  • Preliminary bill of materials
  • Industrial design selected
Phase 2 Detailed Design
  • Complete CAD model
  • Schematics
  • Theoretical analyses
  • Detailed bill of materials
Phase 3 Engineering Prototypes
  • Drawings and data sheets
  • Engineering prototypes
  • Verification results
  • Updated bill of materials
Phase 4 Alpha Prototypes
  • Alpha Prototypes
  • First article inspections for all custom parts
  • Formal verification results
  • Final bill of materials, CAD models, schematics, etc.
Phase 5 Transfer to Manufacturing
  • Pilot manufacturing at Lathrop, client, or contract manufacturer

Lathrop's development process is tailored to every project, so the number of phases and their goals may be modified to fit your project needs. Even if we'll only be working with you on a single phase of your development process, we'll likely view it internally as a complete project of two or more phases.

Phase 0

Phase 0 is the most critical phase of any project — so much so we dedicated an entire newsletter to it. This Planning and Risk Assessment phase allows us to properly scope your project, identify risks and generate mitigation plans, and lay out your project roadmap.

Phase 1

Phase 1 is traditionally called a Breadboard phase, but it's more accurately described as a Risk Mitigation phase at Lathrop. Whether your project risks are related to technical feasibility, aggressive cost of goods, or development of a novel consumable, we've learned through experience that the most efficient use of resources is to mitigate these risks quickly — before expending significant effort on lower-risk engineering tasks that may be impacted by them.

Phase 1 may include developing functional breadboards, transferring manual processes to an automated system to assess process quality, evaluating component or enclosure tradeoffs to meet cost targets, or selecting vendors for critical components.

Phase 2

The Engineering Design phase is where our team focuses on the detailed part of the design, component selection, schematics, and technical analysis that result in a complete, ready-to-build design. In other development processes, this can be one of the longest phases as designers are often making complex choices that impact other aspects of the design, which requires learning and iteration. However, with Lathrop's process, Phase 2 tends to be one of the shortest as we've already resolved all the unknowns in Phase 1. This lets our engineers focus on design execution rather than concept issues.

Phases 3, 4 and 5

Lathrop will often tailor the Engineering Prototype, Alpha Prototype, and Transfer to Manufacturing phases during Phase 0 to meet the needs of your project. Because we've resolved all technical risks in Phase 1 with breadboards, our Phase 3 also tends to be significantly different than other development processes. Depending on the goals identified in Phase 0, our breadboards may encompass the entire function of the product, which often equate to prototypes in other organizations. Lathrop's definition of an Engineering Prototype is a product that looks and functions exactly like the finished product. These mature prototypes can be used not only for design verification, but also for user and clinical validation.

Alpha Prototypes differ from Engineering Prototypes in that they include the use of prototype manufacturing processes for enclosures and other custom parts: machining vs. casting; SLA vs. custom molding, etc. Depending on your intended use of engineering prototypes, full verification may occur in Phase 3 or Phase 4.

At every phase of our development process, best options for manufacturing your product are key considerations. Lathrop can take the lead with low volume manufacturing or engineering prototypes, or work with our partner, a leading contract manufacturer, to deliver products ready for commercial sale in high volume.