Organic Solar Cell Patent Landscape 2026
Organic Solar Cell Patent Landscape in 2026
LG Chem dominates a moderately concentrated field in which industry players and elite U.S. and Korean universities share the top tier. The field is still expanding on a multi-year basis, though annual filing volume has eased from its 2023 peak, and the most recent years remain further understated by publication lag.
LG Chem leads a field shared between industry and academia
LG Chem holds the top position in the organic solar cell patent landscape, followed by Princeton University, the University of Michigan, Dow Global Technologies, and 3M Innovative Properties — a ranking that spans both corporate and academic applicants.
The top five filers account for 24% of the combined total across the hundred largest filers, indicating moderate concentration: a clear leader exists, but the field is not locked up by any single entity. A second tier of seven to ten active filers — including Merck. Patent GmbH, LG Innotek, the Korea Research Institute of Chemical Technology, and the University of California — keeps the competitive space genuinely open.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | LG Chem Ltd. | 328 | |
| 2 | The Trustees of Princeton University | 197 | |
| 3 | The Board of Regents, The University of Michigan | 173 | |
| 4 | Dow Global Technologies LLC | 142 | |
| 5 | 3M Innovative Properties Co. | 137 | |
| 6 | Merck Patent GmbH | 108 | |
| 7 | LG Innotek Co., Ltd. | 90 | |
| 8 | Korea Research Institute of Chemical Technology | 83 | |
| 9 | The Regents of the University of California | 80 | |
| 10 | Samsung Electronics Co., Ltd. | 77 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Heliatek GmbH | 76 | |
| 12 | Raynergy Tek Inc. | 75 | |
| 13 | Ubiquitous Energy Inc. | 73 | |
| 14 | Semicon Energy Lab Co., Ltd. | 71 | |
| 15 | SolarWindow Technologies Inc. | 66 | |
| 16 | University of Southern California | 64 | |
| 17 | Guangzhou Zhuiguang Technology Co., Ltd. | 63 | |
| 18 | Oxford Photovoltaics Ltd. | 62 | |
| 19 | Brilliant Light Power Inc. | 62 | |
| 20 | GWANGJU INST OF SCI & TECH | 61 |
LG Chem’s lead, anchored in semiconductor device and organic semiconductor classifications, reflects sustained corporate investment in material-device integration. The strong presence of U. S. universities (Princeton, Michigan, USC, UC) signals that foundational research remains an active source of new IP, creating licensing and partnership opportunities for industrial players.
Filing counts for the most recent 18–24 months are understated due to patent publication lag and should not be interpreted as a slowdown beyond what the lifecycle analysis already accounts for. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2023 filing surge followed by a lag-adjusted plateau, dominated by semiconductor and organic-semiconductor classifications
The annual trend chart and technology-composition breakdown together reveal where momentum lies and which IPC branches define the core of organic solar cell IP activity.
Annual filing trend
Filings rose steadily from 2017, dipped in 2020–2021, then surged to a recorded high in 2023 before easing in 2024. The apparent drop in 2025–2026 reflects publication lag, not a genuine reversal — the three-year recent window is up 38% versus the prior equivalent window. Treat 2024 onward as provisional.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01L (semiconductor devices) and H10K (organic semiconductors) together represent the dominant technical backbone of this landscape, reflecting the device-layer and materials focus of most filers. H02S (photovoltaic power generation), C07D (heterocyclic compounds), and C08G (condensation polymers) form a secondary layer, pointing to system-level and synthetic-chemistry activity adjacent to the core device work.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Conducting polymer to which pyrene compounds are i…
The present invention relates to a pyrene-containing conductive polymer represented by formula 1 and an organic solar cell comprising the same as an organic photovoltaic material. The conductive polymer has improved hole mobility as a result of introducing a specific amount of pyrene either into a polymer, which consists only of a donor functional group… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Internal connector for organic electronic devices | 822 |
| 2 | Organic photosensitive optoelectronic device with … | 642 |
| 3 | Organic photosensitive optoelectronic devices with… | 632 |
| 4 | Nanowire-based transparent conductors and applicat… | 531 |
| 5 | Solar cells using fullerenes | 523 |
| 6 | Optoelectronic device | 513 |
| 7 | Organic photovoltaic devices | 506 |
| 8 | Solar cell module | 398 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the patent structure means for R&D strategy
Lifecycle stage, competitive concentration, co-filing networks, and geographic spread each carry distinct implications for where to place R&D bets in organic solar cells.
Growth stage with easing annual peaks
The lifecycle evidence places organic solar cells in the Growth stage: the recent three-year filing window is 38% above the prior equivalent period, confirming multi-year expansion. However, annual volume peaked in 2023 and has eased since, so the field is maturing rather than accelerating. New entrants can still establish positions, but differentiation is increasingly important as dominant classifications become crowded.
Growth · past 2023 peakModerate concentration with an open second tier
At 24% top-five share of the hundred largest filers, no single player controls the landscape. LG Chem’s lead is substantial but not insuperable. The second tier — Merck Patent GmbH, LG Innotek, the Korea Research Institute of Chemical Technology, Raynergy Tek, and Ubiquitous Energy — is active enough that a focused entrant in an adjacent branch could credibly challenge incumbents within a few filing cycles.
Moderate concentrationUniversity-led co-filing networks anchor the ecosystem
The University of Michigan Board of Regents is the most active co-filer in the corpus, collaborating most heavily with the University of Southern California (37 joint records), Michigan State University (15), and Princeton University’s trustees (15). LG Chem co-files with POSTECH (10 records) and Daegu Gyeongbuk Institute of Science and Technology (10), illustrating a corporate-academic model that bridges materials discovery and device engineering. Konarka Technologies and Raynergy Tek also share a notable co-filing relationship (11 records).
University-industry networksU.S.-centric filings with strong Asian and European coverage
The United States is the lead filing jurisdiction, followed by the EPO, China, South Korea, and WIPO PCT. Germany, Japan, India, Australia, and Taiwan form a secondary geographic ring. This spread confirms that commercially significant markets are protected across North America, Europe, and East Asia, making freedom-to-operate analysis essential in all three regions for any entrant.
Multi-jurisdictionalGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| The Board of Regents, The University of Michigan | University of Southern California | 37 |
| The Trustees of Princeton University | The Board of Regents, The University of Michigan | 15 |
| The Board of Regents, The University of Michigan | Michigan State University | 15 |
| Konarka Technologies Inc. | Raynergy Tek Inc. | 11 |
| LG Chem Ltd. | POSTECH Academy-Industry Foundation | 10 |
| LG Chem Ltd. | Daegu Gyeongbuk Institute of Science and Technology (DGIST) | 10 |
| Samsung Electronics Co., Ltd. | Samsung SDI Co., Ltd. | 9 |
| Merck Patent GmbH | Technology Research and Development Fund Ltd. | 8 |
| BASF SE | BASF (China) Co., Ltd. | 8 |
| The Board of Regents, The University of Michigan | Universal Display Corporation | 5 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
LG Chem leads; universities hold durable second-tier positions
The top of the ranking is split between a corporate leader with broad device and materials coverage and research universities whose foundational portfolios remain commercially influential.
LG Chem
LG Chem holds 328 patent records — the largest position in the ranked set — concentrated in H01L 31 (semiconductor devices, 291 records), H10K 99 (organic semiconductors, 229 records), and H01L 51 (148 records). This breadth across device architecture and organic semiconductor materials signals an integrated IP strategy covering both the photoactive layer and device integration. LG Chem also co-files with POSTECH and DGIST, extending reach into frontier materials research.
328 patent recordsPrinceton University (Trustees)
Princeton’s trustees hold 197 patent records, second overall, with primary focus in H01L 31 (170 records) and H10K 99 (141 records) — closely mirroring LG Chem’s classification profile but from a foundational research posture. Princeton co-files actively with the University of Michigan (15 records), suggesting a collaborative network that generates licensing-ready IP. As an academic institution, its portfolio is a persistent licensing target for commercial players seeking upstream coverage.
197 patent records| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| The Board of Regents, The University of Michigan | 21 | ▬ -5% |
| Dow Global Technologies LLC | 6 | ▼ -82% |
| Samsung Electronics Co., Ltd. | 1 | ▲ new entrant |
| Korea Research Institute of Chemical Technology | 3 | ▲ new entrant |
| Merck Patent GmbH | 2 | ▲ new entrant |
Under-served branches worth monitoring for entry or collaboration
The following IPC classes sit adjacent to the dominant H01L and H10K core but carry relatively lower filing density, creating potential space for differentiated positioning. These are observations of relative sparsity; entry viability depends on additional commercial and technical due diligence.
H02S · Photovoltaic / solar power generation (system level)
With 722 patent records, H02S is the largest of the adjacent branches but remains well below the dominant device and materials classes. This class covers panel integration, mounting, power conditioning, and system engineering — areas where organic solar cell IP is sparse relative to silicon PV. Filers with organic cell technology who can extend into system-level claims may find less crowded ground and stronger freedom-to-operate positions in balance-of-system applications.
Search this in Eureka →C07D · Heterocyclic compounds (active-layer chemistry)
C07D (649 patent records) covers the synthetic chemistry of heterocyclic molecules — the backbone of many non-fullerene acceptors and donor polymers used in high-efficiency organic photovoltaics. Filing density here is lower than in the device-layer classes, yet the link to performance improvements in next-generation materials is direct. Synthetic chemists and specialty chemical firms capable of bridging molecular design and device performance have a plausible entry path through novel compound IP in this branch.
Search this in Eureka →How leading applicants differ by technology route
Strength of each leader across the main technology routes.
| Player | H01L 31 · Semiconductor devices | H01L 51 · Semiconductor devices | H10K 99 · Organic semiconductors (OLED etc.) | H10K 30 · Organic semiconductors (OLED etc.) | H10K 85 · Organic semiconductors (OLED etc.) |
|---|---|---|---|---|---|
| LG Chem Ltd. | Strong · 291 | Strong · 148 | Strong · 229 | Moderate · 62 | Emerging · 24 |
| The Trustees of Princeton University | Strong · 170 | Strong · 103 | Strong · 141 | Absent | Absent |
| The Board of Regents, The University of Michigan | Strong · 118 | Moderate · 45 | Moderate · 56 | Strong · 60 | Moderate · 25 |
| Konarka Technologies Inc. | Strong · 92 | Moderate · 36 | Moderate · 37 | Absent | Absent |
| Korea Research Institute of Chemical Technology | Strong · 78 | Moderate · 28 | Moderate · 30 | Absent | Absent |
| Dow Global Technologies LLC | Strong · 135 | Absent | Absent | Absent | Absent |
| Oxford University Innovation Ltd. | Absent | Strong · 31 | Strong · 33 | Strong · 31 | Strong · 27 |
Frequently asked questions
LG Chem leads the ranked landscape with 328 patent records, ahead of Princeton University’s trustees at 197, the University of Michigan Board of Regents at 173, Dow Global Technologies at 142, and 3M Innovative Properties at 137.
The field is in the Growth stage. The most recent three-year filing window is 38% above the prior equivalent period, confirming multi-year expansion. Annual volume peaked in 2023 and has eased since, and the most recent years are further understated by publication lag.
The United States is the primary jurisdiction, followed by the EPO, China, South Korea, and WIPO PCT. Germany, Japan, India, Australia, and Taiwan form a significant secondary tier.
H01L (semiconductor devices) and H10K (organic semiconductors) are the dominant IPC classes, together forming the core of device and materials IP. H02S (photovoltaic power generation), C07D (heterocyclic compounds), and C08G (condensation polymers) constitute an important secondary layer.
The University of Michigan and the University of Southern California are the most active co-filers with 37 joint records. Princeton and Michigan share 15, as do Michigan and Michigan State. LG Chem co-files with POSTECH and DGIST (10 records each), while Konarka Technologies and Raynergy Tek share 11 joint records.
Relative to the dominant H01L and H10K core, H02S (photovoltaic system integration), C07D (heterocyclic compound chemistry), C08G (condensation polymers), B32B (layered laminates), and C09K (specialty materials) all show lower filing density and may offer differentiated positioning for new entrants with the right technical capabilities.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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