How TRIZ-Based System Analysis Can Transform Your Patent Search Strategy
In today’s competitive innovation landscape, the quality of your patent search can make or break your IP strategy. Traditional methods risk missing inventive alternatives hidden behind different terms or technologies. In this article, Michael Felbinger, CEO, Senior Patent Searcher & Analyst of IPnovation GmbH, explains how TRIZ-based system and function analysis shifts the focus from components to functions — revealing hidden solutions, reducing legal risks, and enhancing search precision, especially when combined with AI tools.
Introduction: Why Strategy Matters in Patent Searching
Patent searches are no longer just about combing through databases with company names, keywords, or classification codes. Whether you're preparing an FTO (Freedom-to-Operate) analysis, a novelty search, or a validity check, the difference between a weak and a strong result often lies in one thing: strategy.
While many search professionals focus on features and components, there's an additional way to think: by understanding the functions of a system. This is where the TRIZ method, particularly system and function analysis, becomes a game-changer. Developed for inventive problem solving, TRIZ offers a structured way to decode complex technical systems — and with it, refine your search strategy beyond conventional limits.
From Features to Functions: Rethinking How We Search
Traditional patent searches rely on identifying components, parameters, and effects. These elements are essential, but they often fall short when it comes to identifying functionally equivalent alternatives — particularly those that avoid using the same terminology or structure.
TRIZ turns the focus from what something is to what it does. Using the SAO model (Subject–Action–Object), TRIZ allows you to describe the core functions of a system:
Example:
EMS stimulator (Subject) – stimulates (Action) – nerve (Object)
This model helps identify technical effects regardless of the physical components used. In doing so, it opens up a new realm of search possibilities — especially in situations where equivalent infringement must be assessed.
System Thinking: Define Boundaries Before You Search
A critical first step in TRIZ-based analysis is defining the system, super-system, and subsystems. This determines what truly belongs in the scope of your analysis — and what doesn't.
Consider a hand prosthesis with a tactile feedback mechanism. The initial temptation might be to focus solely on the sensor. But with system analysis, the nerve (stimulation) becomes the central target — the object of the main function. That shift in focus ensures your search revolves around the real core of the invention.
This broader system awareness helps identify overlooked technical solutions and protects against tunnel vision — a common pitfall in conventional searches.
Parameter-Based Function Analysis: A Precision Tool
TRIZ doesn't just identify functions — it breaks them down into measurable parameters and their effects. Each SAO structure can be extended to include:
Parameter (What is being changed?)
Type of Change (e.g., increase, reduce, eliminate)
Example:
Subject: EMS stimulator
Action: stimulates
Object: nerve
Parameter: electric field
Type of Change: modulated in real-time
This depth of analysis ensures that even when a specific component isn’t used, any technically equivalent effect is still detectable during the search.
“Trimming” and Functional Equivalence: Search Smarter, Not Harder
TRIZ introduces the concept of “trimming” — intentionally removing a component to focus on the desired function. This is especially valuable in FTO searches, where legal risk may lie in a different implementation of the same function.
Example:
Instead of searching for “EMS stimulator,” try searching for the function “stimulates nerve.”
This could reveal haptic feedback systems using vibration generators — performing the same task with a different technology.
By understanding the effect rather than the means, the search can anticipate functional alternatives that evade typical keyword-based searches and AI based search strategies.
Visualizing the System: From Function Charts to Strategy Maps
TRIZ-based system and function analysis often results in function diagrams — maps of how components interact. These visualizations can reveal:
Missing system elements
Harmful or unintended functions
Redundant or unnecessary actions
They also help distinguish primary functions from supporting ones, allowing you to focus on what truly defines the invention. This clarity is key for constructing effective search queries — especially for complex systems.
TRIZ + AI: The New Gold Standard in Patent Research
With the rise of AI-powered patent search tools, TRIZ offers a structured foundation to guide the system with the right input. Whether you're using graph-based systems or free-text AI search tools, a TRIZ-derived feature-and-function tree enhances:
Relevance of results
Coverage of functionally equivalent designs
Reduction in false positives
AI is only as effective as the information it receives. A TRIZ-based system map helps you speak the AI's language more clearly — making sure the tool understands not just the components, but why they matter.
Application in Practice: A Prosthesis Feedback System
A TRIZ system and function analysis was applied to a hand prosthesis with tactile feedback via EMS stimulators. The key takeaway: while pressure sensors and stimulators are essential, the main function is “nerve stimulation.” The nerve is the actual target object — and thus the critical element in both the system and the search.
Such insights would likely be missed in a conventional approach focused on hardware terms. With TRIZ, the researcher not only identified equivalent technologies but also enhanced the overall quality and depth of the search.
Final Thoughts: Strategic Searching Starts with System Thinking
Our TRIZ approach doesn’t replace conventional patent search methods — it amplifies them. By shifting your mindset from components to functions, from terminology to effects, and from what exists to what occurs, you unlock:
A deeper understanding of the search subject
A broader and more flexible search scope
Stronger and more reliable FTO analysis
Improved identification of relevant results
Lower legal exposure through functional equivalence
Yes, our TRIZ-based system and function analysis requires time and expertise — but the returns in clarity, precision, and recall make it well worth the effort.
Want to take your search strategy to the next level?
Start with our TRIZ approach and get in touch with IPnovation for expert help that blends strategy, system thinking, and next-gen methods and tools.
📩 office@ipnovation.com
IPnovation GmbH is a one-stop shop for patent literature search, NPL search, patent intelligence, IP-monitoring and search training. 8 highly experienced patent search experts with more than 70 years of search experience stand for a high-quality knowledge base in the technical domains of information and communication technology, electronics, engineering, physics, life sciences and chemistry.
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