1. Introduction
Foldable smartphones have rapidly evolved from futuristic prototypes into a competitive product category, spurring an international race to patent novel designs and technologies. In the past few years, major electronics companies and emerging startups alike have filed a flurry of patents to protect their innovations in flexible displays, advanced hinges, and new form factors.
These patents offer a window into the state of the art – from Samsung’s latest 360-degree folding concept to Apple’s durability-focused ideas – and reveal how each player is staking out intellectual property (IP) turf.
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2. Patent Race Among Smartphone Giants
Leading smartphone manufacturers are aggressively filing patents to secure their positions in the foldable segment. Here’s how the top players are shaping the foldable future through IP:
2.1 Samsung: Redefining Flexibility with 360° and Multi-Fold Designs
Samsung is leading the charge in foldable innovation and patenting. In early 2025, it filed a patent for a 360-degree foldable phone capable of bending both inward and outward—referred to as the “Flex In & Out.” This design merges inward and outward folding into a single seamless device.
- Key Innovation: Ultra-thin glass (UTG) layered with flexible substrates enables dual-direction folding.
- Structural Advantage: Lattice-style support plates and dual hinge axes maintain durability.
- User Experience: Eliminates the need for a second display; even folded, part of the screen remains visible for notifications.
Samsung also patented a tri-fold device with two hinges forming a Z-shaped structure. One hinge folds inward, the other outward—requiring asymmetric engineering and magnetic latching for stability. This design is rumored to debut in 2025.
Samsung backs up these form factor patents with others focusing on hinge durability, foldable OLED refinement, and chassis waterproofing, ensuring holistic IP protection for both utility and design.
2.2 Huawei: Dual-Hinge Designs and Rotating Innovations
Huawei is closing the gap with a growing portfolio of foldable patents, particularly in tri-fold devices. A 2022 CNIPA filing (CN-118675410-A) outlines a device folding into a Z-shape, with three screen segments.
Huawei has gone a step further with a rotating hinge patent, where an end-panel rotates to act as a protective cover when folded and extends the screen when opened. This improves screen safety and compactness.
- Advanced Mechanics: Patents detail dual-rotating shafts that preserve screen curvature.
- Durability Focus: Laminated flexible displays with impact-resistant materials.
- Connectivity Solutions: Patented three-housing design to enhance antenna signal strength.
Huawei’s patents aim not just at expanding screen real estate but at solving real-world durability issues, positioning the brand as both innovative and practical in foldables.
2.3 Motorola/Lenovo: Smarter Hinges with Shape Memory Alloys
Motorola (under Lenovo) is pushing the envelope with a motorized hinge patent using shape-memory alloys—materials that change shape when heated.
- Dynamic Folding: The phone can open, close, or adjust its angle autonomously.
- User-Aware Design: Sensors track user movement (e.g., during a video call) and reposition the screen accordingly.
- Hands-Free Potential: Imagine a flip phone that opens itself on a command or during a call.
Motorola also holds early patents for the waterdrop hinge—a design that reduces screen creasing by allowing a gentler fold. With patents across hinge mechanics, flexible chassis, and outward displays, Motorola is building a distinct foldable identity.
2.4 Apple: Patenting the Future Before It Arrives
While it hasn’t released a foldable iPhone or iPad yet, Apple is steadily building a durability-centric patent portfolio. With over 30 foldable-related patents (20+ granted), Apple’s filings reveal deep R&D efforts.
Key Apple Patents:
- Cold Weather Protection: Heating elements near the hinge prevent screen brittleness in low temperatures.
- Self-Healing Displays: A patented polymer cover that automatically repairs minor scratches or dents with heat or electric current.
- Smart Hinges: Mechanical locks to prevent folding when unsafe; flexible enclosures to reduce stress on the display.
Apple’s strategy is clear: anticipate problems, patent the solutions, and launch with a polished, protected product when the time is right. Rumors suggest 2025–2026 as a possible launch window for a foldable iPhone or MacBook.
3. Other Key Players in the Foldable Patent Landscape
While Samsung, Huawei, Motorola, and Apple dominate the headlines, several other innovators are quietly building their patent arsenals.
3.1 Xiaomi: Filing for a Tri-Fold Future
Xiaomi’s patent (CN308817132S) for a Z-shaped tri-fold device shows three folding panels with varied widths for better ergonomics and display coverage. The patent includes camera placements optimized for this form factor.
- Focus: Design protection within China, with flexibility to expand.
- Patent Strategy: File now, act when the market matures.
3.2 Oppo & BBK Brands: Patenting Compact and Rollable Concepts
Oppo, OnePlus, and Vivo (all under BBK Electronics) have filed patents for:
- Waterdrop-style “Flexion Hinge” – a crease-reducing hinge with compact fold.
- Rollable Phones – like the Oppo X 2021 concept.
- Foldable Smartwatches – expanding foldables beyond smartphones.
Oppo’s patent strategy mixes practical designs and concept showcases, positioning itself for diverse form factor adoption.
3.3 Royole: The First Mover with Material Patents
Royole, which launched the first commercial foldable (FlexPai) in 2018, holds a broad portfolio of flexible AMOLED display patents and stretchable screen tech. While its market share is limited, its IP in materials and sensors holds potential for licensing and partnerships beyond smartphones.
3.4 TCL: Concept Patents and DragonHinge
TCL showcased foldable prototypes as early as 2019 and patented its “DragonHinge” system. Though it hasn’t released a commercial foldable yet, its patents suggest it could re-enter the market with cost-effective foldable solutions.
4. Conclusion
As major players and nimble startups stake their claims through patents, foldable phones have become a true battleground of innovation and IP strategy. The patents outlined in this article show just how many ideas, designs, and technical solutions are being locked in—and how high the stakes are for whoever leads the next phase of mobile evolution.
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